The 1840's saw the first steps away from metal plate engraving for American maps with the cerographic process (wax engraving) utilized by Sidney Morse, the son of Jedidiah Morse and brother of Samuel F. B. Morse, inventor of the telegraph. Also, printing by lithography became widespread; Ristow dates the earliest printing of maps in the United States by lithography to the 1820s. As a result the number of maps printed increased many fold in the 1840s.

This decade saw the last big spurt in creating counties with 8 new ones: Clarion (seat at Clarion) in 1840, Carbon (seat at Mauch Chunk, later named Jim Thorpe) in 1843, Elk (Ridgeway) in 1843, Wyoming (Tunkhannock) in 1843, Blair (Hollidaysburg) in 1846, Forest (Marienville then Tionesta) in 1848, Sullivan (Laporte) in 1848, and Lawrence (New Castle) in 1849. There were now 62 counties in the state.

	1840.1 THE NORTHEASTERN PART OF THE UNITED STATES, engraved for N. P. Willis's American Scenery Illustrated. Drawn and engraved by W. Hughes, London. Published for the proprieters by Geo. Virtue, 26 Ivy Lane. American Scenery Illustrated contained drawings by W. H. Bartlett, and this map shows Bartlett's travels and the locations of the scenes he illustrated. Locations illustrated in Pennsylvania included Philadelphia, Columbia, Liverpool , Sunbury, Northumberland, Wilkes-Barre, the latter five all along the Susquehanna River. The travels from Maine to Virginia are shown as a hand drawn red line with the locations of scenes underlined. There is also an inset with part of Virginia, Maryland, and Delaware. Pennsylvania is shown west to the Alleghenies. Virtue published American Scenery quarterly in 13 volumes to a list of subscribers. The volumes contained 236 steel engravings based on drawings by Bartlett with descriptive text by Willis. The publisher provided title pages and an index to engravings so that the volumes might be separated and rebound any way the subscriber wanted and differing volume numbers are seen. Listed on page 893 of Phillips. Longitude west from Greenwich. Blank verso. Scale: 1 inch = 68 miles. Size: 8 x 10.5 inches.
	1840.2 A NEW MAP OF PENNSYLVANIA WITH ITS CANALS, RAILROADS, AND DISTANCES FROM PLACE TO PLACE ALONG THE STAGE ROADS By H.S. Tanner, Entered…in the year 1840…etc; engraved by W. Brose, Philadelphia. This is plate 13 of an atlas published by Carey & Hart, Philadelphia. It can be dated 1843-1846 by counties shown and therefore is a later issue of the 1840 plate. An earlier version of this map was published in Tanner’s A New Universal Atlas… 1833-34 (see map 1833.5), 1836; with Carey & Hart editions in 1842-43, 1844 per Lister. This map is probably from the 1844 edition. The Pennsylvania Canal is shown in profile at top. Tanner also used an uncolored version of this map in A Description of the Canals and Rail Roads of the United States, comprehending notices of all the works of internal improvement throughout the several states. New York: Tanner and Disturnell, 1840. P. 682 of Phillips. Intaglio print, blank verso, longitude from Washington. Scale: 1 inch = 24 miles. Size: 10.5 x 13.5 inches.
	1840.3 MAGNETIC CHART OF THE UNITED STATES By Elias Loomis 1840, Pl. 2 from Am. Jour. Sci. Vol. Xxxix No. 1. (American Journal of Science). The map shows the east coast from Maine to a cutoff Florida. Dotted lines indicate magnetic variation and dip. The line of no variation passes near Pittsburgh. Originally folded and torn at right edge from the journal with a faint indication of offset printing. Intaglio print, blank verso. Longitude west from Greenwich. Scale: 1 inch = 168 miles. Size: 8 x 8 inches.
	1840.4 PHILADELPHIA. Published by the Society for The Diffusion of Useful Knowledge, 59 Lincolns Inn Fields, September,1840. Although dated earlier, this map is believed to come from an 1844 atlas. It shows the town plan of Philadelphia between the two rivers. The views at bottom are of the United States Bank and the Exchange. The Society for the Diffusion of Useful Knowledge (SDUK) was founded in England in 1826 to provide improving information, such as maps, at affordable prices. SDUK maps are regarded as some of the most precise maps of the mid-19th century due to their clear detail achieved by steel engraving. Blank verso with no longitude markings. Scale: 1 inch = 1500 feet. Size: 12 x 14.5 inches.
	1840.5 MAP EXHIBITING THAT PORTION OF THE STATE OF PENNSYLVANIA TRAVERSED BY THE SURVEYS FOR A CONTINUOUS RAIL ROAD FROM HARRISBURG TO PITTSBURG. Made under the direction of Charles l. Schlatter. C.E. in the year 1839 and 1840. Drawn by Charles Cramer. Lithographed by J.T. Bowen, No. 94, Walnut St., Philadelphia. The map covers the territory between Harrisburg and Pittsburgh, the mountainous part of the state. It references (1) the line surveyed in 1839 and 1840 (2) line of survey made under the direction of Hother Hage in 1838, (3) rail roads currently in operation, (4) canals in operation, (5) lines surveyed by proposed canals, (6) a middle route, (7) line surveyed for a Mcadamized road from Laughlintown to Loudon. This unusual map was apparently prepared for a (presumably private) report. It has had something spilled on it when folded, and also has some tearing at the edges. Lithograph. Blank verso. Scale: 1 inch = 6 miles. Size: 18 x 31 inches.
	1840.6 CARTE DES ETATS-UNIS D'AMERIQUE COMPRENANT UNE PARTIE DES DISTRICTS DE L'QUEST ET DE LA NOUVELLE BRETAGNE. Dresse'e pour servir a' l'ouvrage de Mr. Guizot. Paris. 1840. Imp. De Kaeppelin et Cie., Quai Voltaire, 15. This map of the eastern United States extends from Nova Scotia to Florida and west to beyond the Mississippi. Arkansas (1836) is shown as a territory as is Michigan (1837), so the map is not up to date. A large swath of the Atlantic out to Bermuda is included. Many towns are named, and mountains and rivers shown. It was originally folded into an ~11 x 9 inch book, so it is probably from a history rather than an atlas. François Pierre Guillaume Guizot was a French politician and historian who produced many books. This map presumably comes from one of his histories though it is not known which one. Blank verso, lithograph with an ttractive 'keyboard' border. Scale: 1 inch = 124 miles. Size: 15 x 19 inches.
	1840.7 PENNSYLVANIA. This small leaf is believed to be pages 255-256 from Goodrich’s Pictoral Geography. The Library of Congress listing is A Pictorial Geography of the World, comprising a system of universal geography, popular and scientific, and illustrated by more than one thousand engravings. With a copious index, answering the purpose of a gazetteer, by S. G. Goodrich, Boston: Otis, Broaders and Company. New York: Tanner and Disturnell,1840. Edited by T. S. Bradford and issued in 10 parts. The small black and white map is on page 256; text on page 255 has 1836 as the latest date. Wood engraving. longitude from Washington. Scale: 1 inch = 55 miles. Size: 3 x 5 inches (map).
	1841.1 THE MIDDLE STATES, page 35 from Geography for Children, the verso is text on page 36. This map is from The Village School Geography. Embellished with numerous engravings and ten neatly engraved maps, by a Teacher, Hartford, Reed and Barber circa 1841, which contained 128 pages of illustrations and maps. It shows New York, New Jersey, Pennsylvania, Maryland and Delaware, and appears to have 1830 census data. A few towns are shown, including Shinersville north of Williamsport, which must have had some significance for the mapmaker. Longitude from Washington at top, Greenwich at bottom. Size: 4 x 4 inches.
	1841.2 UNITED STATES, Engraved by S. Hall Bury Strt. Bloomsbury. London. Published by Longman & Co. Paternoster Row. Page marked xx. This map is dated 1841 here and is believed to be from Black’s General Atlas, A. & C. Black, Edinburgh. The earliest date seen for this atlas is 1840 and it was apparently published through most of the century. The map shows the United States west to the Mississippi. It does not show Iowa territory organized in 1838, but does show Michigan admitted in 1837 but without its northern peninsula. So map preparation probably dates late 1830’s. A similar map was seen from the 1844 edition of Samuel Butler's General Atlas of Geography also published by Longman and with editions from the 1820s. The hand coloring may not be original to the map. Intaglio print. Longitude west from Greenwich, blank verso. Scale: 1 inch = 200 miles. Size: 9.5 x 7.5 inches.
	1841.3 UNITED STATES. London: Published by Thomas Kelly, 17, Paternoster Row. Drawn & engraved by Alexr. Findlay. This map is believed to be from The New Universal English Dictionary of 1841 by James Barclay, Curate of Edmonton, a publication whose size matches this map. It shows the United States to beyond the Mississippi with a cutoff Maine and lower Florida in an inset. This map was also seen dated 1842 from A New and Complete System of Universal Geography (London: Thomas Kelly, 1835-1843). A copy with a date of 1836 was also seen, possibly the initial printing. Intaglio (steel?) print. Blank verso, longitude west from Greenwich. Scale: 1 inch = 190 miles. Size: 7.5 x 9.75 inches.
	1841.4 MAP OF THE UNITED STATES. Engraved for Buckingham's America. Engraved by "The Omnigraph" F.P. Becker & Co. Patentees. Fisher, Son & Co. London Paris. This map is from America, historical - statistic - and descriptive; embellished with seventy-three engravings on wood, with a new omnigraphed map of the United States, (this map) engraved expressly for this work, and a portrait of the author on steel, by James S. Buckingham, Esq. Published London; and Paris: Fisher, Son, & Co. 1841. This is a poor map for the time, with few towns and Pennsylvania shown without the Erie triangle. Originally folded. Lithograph. Blank verso, longitude west from London. Scale: 1 inch = 182 miles. Size: 7.75 x 9.25 inches.
	1841.5 THE TOURIST'S POCKET MAP OF PENNSYLVANIA EXHIBITING ITS INTERNAL IMPROVEMENTS ROADS DISTANCES &C. By: J.H. Young. Philadelphia: Published by S. Augustus Mitchell. 1841. This pocket map was published almost every year during this period and resembles the earlier and later maps of the same title shown in the article Pennsylvania in Early Pocket Maps. It folds into a 5 x 3 inch black hard back cover with the title Mitchell's Map of Pennsylvania. Insets of Lehigh and Schuylkill Coal Regions and Vicinity of Philadelphia are at bottom. Many roads, towns, railroads and topographical features noted, and the Profile of the Pennsylvania Canal is shown at the top. Keyboard-style border on onionskin paper, blank verso. Longitude west from Greenwich at bottom, from Washington at top. Scale: 1 inch = 23 miles. Size: 12.5 x 15 inches.
	1842.1 PENNSYLVANIA AND NEW JERSEY, page 31 from an atlas by Thomas Gamaliel Bradford, Boston dated c1840-43 by counties shown. Bradford's A Comprehensive Atlas Geographical, Historical & Commercial was published in 1835 (page 681 of Phillips) and 1838 (LeGear L32, L33) and this map may come from a still later edition. Bradford's maps have a clean look as this one shows. Blank verso. Scale: 1 inch = 32 miles. Size: 9.5 x 11.5 inches.
	1842.2 PENNSYLVANIA, Page No. 39 from A New Universal Atlas; comprising separate maps of all the principal empires, kingdoms & states throughout the world: and forming a distinct atlas of the United States. Carefully compiled from the best authorities extant by Jeremiah Greenleaf. A new edition revised and corrected to the present time. 1848. Printed by G.R. French, Brattleboro Vt. Issued by Greenleaf, being a reissue of David Burr's 1836 edition of A New Universal Atlas.There appear to have been several editions of Greenleaf. It is listed in Phillips dated 1842. A date of 1840 was seen for the first edition, and an edition of 1848 was seen listed as given above. This copy dates 1840-43 per counties shown and so is dated 1842 here. The Burr map is map 1836.1. This map shows roads, canals, and railroads. Intaglio print. Longitude from Greenwich at top, from Washington at bottom, blank verso. Scale: 1 inch = 26 miles. Size: 10.5 x 12.5 inches.
	1842.3 UNITED STATES. London, published by Longman, Rees, Orme, Brown & Green, Paternoster Row, Drawn & engraved by Sidy. Hall, Bury Str. Bloomsby. This map is identical to map 1823.2 but lacks the atlas identity at the top. The date at bottom and the mileage scale is also different. It dates to the 1840s and is probably from Samuel Butler's General Atlas of Modern and Ancient Geography. Listings for this atlas date to 1822, 1825 and circa 1842, so the 1842 date is used here. The map is hand-colored in outline with an inset of lower Florida at bottom right. Intaglio print. Blank verso, longitude west from Greenwich. Scale: 1 inch = 206 miles. Size: 7.25 x 9.25 inches.
	1842.4 UNITED STATES, Plate CCCCXCVIII from the 7th edition of the Encyclopaedia Britannica, 1842. UNITED STATES, NORTHERN PART is a second title at the bottom. The following listing was found in COPAC: “Main author: Napier, Macvey, ed., 1776-1847. Title details: The Encyclopædia Britannica or dictionary of arts, sciences, and general literature. Seventh edition, with preliminary dissertations on the history of the sciences, and other extensive improvements and additions; including the late supplement, a general index, and numerous engravings. Published: Adam and Charles Black, Edinburgh, 1842. Physical desc.:22v. : ill., 475 plates (16 folding), 27 folding maps ; 4°.” This black & white map shows the region from Maine to Wisconsin and south to include all of Delaware and most of Maryland. Roads appear to be shown by double line with either canals or railroads by single black line. Many towns named. Southern Canada is included with little detail. Intaglio print, probably steel. Blank verso, longitude from Greenwich. Scale:1 inch = 100 miles. Size: 10 x 14 inches.
	1842.5 UNITED STATES WITH UPPER & LOWER CANADA, Engraved & Published by G.F. Cruchley, Mapseller, 81 Fleet Street, London. March 1st, 1842. This map comes from Cruchley's Improved Atlas for schools & families, as printed at the top. It shows the eastern United States to just beyond the Mississippi, including Florida. Cruchley flourished circa 1840-70 publishing atlases for homes and schools. Hand color, intaglio print, possibly steel. Blank verso, longitude west from Greenwich. Scale:1 inch = 130 miles. Size: 17.5 x 13.5 inches.
	1842.6 MAP 7. 1763. This small anonymous map shows the northeast with a cutoff Maine. It is believed to date circa 1842 and to come from a history book; though it has also been seen dated 1857. The date on the map is illustrative. At the top is a small vignette of Wolfe's death and an inset map of Quebec. Rivers are shown and a few towns are named. It appears to be an intaglio print, which is why the earlier date is used here. Blank verso, longitude apparently from Washington, which is not named. Scale: 1 inch = 130 miles. Size: 7 x 4.5 inches.
	1843.1 PENNSYLVANIA , entered according to act of Congress in the year 1843 by Sidney R. Morse & Samuel Breese. This map is from the Cerographic Atlas of the United States, supplement to the New York Observer, S. E. Morse & Co., New York, 1842-45. It has been colored by the cerographic printing process (a type of lithography) which left a grid of very fine green lines and a thick green line for the county boundaries. LeGear (L36) says there were 32 color maps in the atlas. There are inserts of Philadelphia and the coal regions of Schuylkill and Carbon counties. Woodward gives a discussion of the cerographic process, which was also called wax engraving, and was cheaper than metal plate engraving, but did not produce as clean an image. Morse must have been aiming for cheapness, as the paper of this map is also of lower quality. Longitude from Washington at bottom, from Greenwich at top. Blank verso. Scale: 1 inch = 22 miles. Size: 12 x 15 inches.
	1843.2 POLITICAL MAP OF THE NORTHERN DIVISION OF THE UNITED STATES, By William Channing Woodbridge, adapted to Woodbridge's Geography. This engraved map shows the states of Missouri, Illinois, Indiana, Kentucky, Ohio, Michigan, Virginia, Maryland, Delaware, New Jersey, New York, Pennsylvania and the territory of Iowa; in other words the northeast plus the midwest. The detail is excellent with all counties named and hundreds of towns and villages. There is a surprisingly large railway network at this early stage of development with one line reaching to Cleveland. Wagon roads are also noted. The legend indicates six different sizes of cities, railways, universities and colleges, and canals. Dated at lower left, "Entered according to Act of Congress in the year 1843 by William C. Woodbridge in the Clerk's Office of the District Court of Massachusetts." Originally folded and parts of the map extend beyond the border. Intaglio print, blank verso, longitude from Greenwich at top, from Washington at bottom. Scale: 1 inch = 67 miles. Size: 10 x 17 inches.
	1843.3 DER OESTLICHE THEIL VEREINIGTEN STAATEN VON NORD AMERICA NEBST DEM BEWOHNTESTEN THEILE VON CANADA, Entworfen und gezeichnet von C.F. Weiland. Weimar im verlage oes Geograph Instituts 1843. Gestochen V. Karl Madel. This map is believed to be from the Allgemeiner Hand-Atlas der Erde und des Himmels nach den besten astronomischen Bestimmungen, neuesten Entdeckungen und kritischen Untersuchungen entworfen. Geographisches Institut in Weimar; which was published in the later 1840s or early 1850s. There are insets of Washington, Boston, Philadelphia, New York at lower right and a table of English-German equivalent names at lower left. Hand colored in outline, relief shown by hachures. Shows states, Indian tribes, roads, canals, etc. Intaglio print probably from a steel plate. Blank verso, longitude east from Ferro at top, west from Ferro and from Washington at bottom. Scale: 1 inch = 80 miles. Size: 24.5 x 20 inches.
	1843.4 CARTE GÉNÉRALE DES ÉTATS-UNIS DES HAUT ET BAS-CANADA, DE LA NOUV.LE ECOSSE, NOUV.AU BRUNSWICK, DE TERRE-NEUVE, &A. Seconde Édition par A. Brué Géographe du Roi Revue et augmentée par Ch.les Picquet Géographe du Roi et du Duc d'Orléans Paris 1843. A sheet from the Adrien Hubert Brué Atlas Universel de Géographie physique, ancienne & moderne. Contenant les cartes générales et particulières de toutes le parties du Monde ... Par A. Brué, Géographe du Roi, revue et augmentée par Ch.les Picquet, Géographe du Roi et M.gr le Duc d'Orléans. Paris. There were several editions of this atlas circa 1840s. The map shows the United States from Maine to a cutoff Florida and west to beyond the Mississippi. At bottom right are insets of south Florida and Newfoundland. Intaglio print, possibly from a steel engraving. Blank verso, longitude from Paris. Scale: 1 inch = 110 miles. Size: 14.5 x 20 inches.
	1843.5 UNITED STATES, Drawn & engraved by J. Dower, Pentonville London. London: published by Orr & Compy. Amen Corner, Paternoster Row. This is an undated map of the east from Maine to Florida and to just beyond the Mississippi. Arkansas (1836) and Michigan (1837) shown as states while Iowa (1846) is not. There is a note at top on the US - Canada boundary with the date August 9th, 1842, so this map is dated circa 1843 here. From COPAC: A School Atlas of Modern Geography containing thirty six maps: prepared from the best authorities and including the latest discoveries with a copious index, by John Dower. London : Orr and Company, [1845? Or 1850?] 1 atlas ([36] leaves of maps,24p) : col ; 24cm; which was published at various times in the 1840s and is believed the source of this map. Rivers, hills, and many towns shown. Page 39 and Plate XXXII at edge. Intaglio print. Blank verso, longitude west from Greenwich. Scale: 1 inch = 175 miles. Size: 10 x 8.25 inches.
	1844.1 MAP OF THE CENTRAL STATES TO ILLUSTRATE OLNEY'S SCHOOL GEOGRAPHY, entered according to act of Congress in the year 1844 by D. F. Robinson. Drawn & eng. by Sherman & Smith, N. Y. The entire map includes Pennsylvania, New Jersey, Delaware, Maryland, Virginia (no West Virginia yet), Ohio, Indiana, and Kentucky. The 1840 census population is printed across the states and a legend for railroads, canals, and (pre-Civil War) battles included. Blank verso. Scale: 1 inch = 46 miles. Size: 17 x 10.5.
	1844.2 A MAP OF THE ECLIPSE OF DEC. 9TH 1844 IN ITS PASSAGE ACROSS THE UNITED STATES. Engraved for the American Almanac. Boston: published by D.H. Williams. Engraved by G.W. Boynton. The eastern United States is shown from to a cutoff Florida whose southern half is in an inset at right, to beyond the Mississippi. Arkansas is shown as a state (1836) but not Iowa (1846). Lines show the eclipse track with the word "digits" apparently referring to the amount of eclipse a hand would cover. Intaglio print, blank verso, longitude from Washington at top, from Greenwich at bottom. Scale: 1 inch = 133 miles. Size: 10.5 x 13 inches.
	1844.3 PLAN VON PHILADELPHIA. Gez. O. R. Gross. Lith. Anst. O. W. Pobuda. A small and undated map from an unknown German book. It is dated to the mid-1840s here and shows the downtown between the two rivers with a building and street index on either side. It bears comparison to the 1828.9 German map, but is not the same map. Lithograph, blank verso. Scale: 1 inch = 0.7 miles. Size: 4.75 x 7 inches. .
	1844.4 MAP TO ILLUSTRATE THE HISTORY OF NEW ENGLAND, NEW YORK, NEW JERSEY & PENNSYLVANIA. This map shows the area from Maine to Pennsylvania and comes from The History and Antiquities of New England, New York, New Jersey, and Pennsylvania, by John Warner Barber, Hartford: Allen S. Stillman & Co., 1844. No mapmaker or engraver is identified. A few towns are named, mountains and streams indicated. Parts extend beyond the neat line. Originally folded. Intaglio print, blank verso. Longitude from Washington. Scale: 1 inch ~ 85 miles. Size: 7 x 11.5 inches.
	1844.4 UNITED STATES. Page 42 from The Edinburgh New General Atlas 1844 by J. Lothian, A.K. Newman & Co. London: Orr & Sons & J. Morrison Glasgow. This map shows the eastern United States to the Mississippi River with Florida as an inset. Though published in 1844, the map names Alabama, Illinois, and Michigan as territories. Wisconsin and western Michigan is the Northwest Territory. Maine is the District of Maine. Maryland ends at Hancock and the southern Pennsylvania boundary has a bulge to include western Maryland; the Erie triangle is missing. In sum, this map is remarkable for its ignorance of the country. Shown are numerous Indian tribes, trading companies, towns and villages, whose veracity might be also questioned. Louisiana extends through the neat line. The states are outlined in color. This same map was seen dated 1846. Intaglio print, longitude west from Greenwich, blank verso. Scale: 1 inch = 135 miles. Size: 10.75 x 13.25 inches.
	1845.1 NEUESTE KARTE VON PENNSYLVANIA MIT SEINEN CANAELEN, EISENBAHNER & C. , Plate 140 from Grosser Hand-Atlas by J. Meyer, Hildburghausen: verlag des Bibliographischen Instituts. The map is dated 1831-36 by the counties shown. Joseph Meyer published German language atlases in both Germany and Philadelphia in mid-century. The city, and southeastern Pennsylvania, had a large German population. An inset table gives town distances in German miles, and there are 12 different milage scales shown at bottom center, including English, Dutch, Spanish, Swedish, etc. The topography is shown by detailed etching characteristic of German maps. This map is similar to earlier ones by Mitchell and Tanner with the Pennsylvania Canal profile across the top. There is also an 1849 version by Meyer similar to this one. Blank verso. Scale: 1 inch = 24 miles. Size: 12 x 16 inches.
	1845.2 MAP ILLUSTRATING THE NEW ENGLAND CHARTER CLAIMS WEST OF THE DELAWARE. No. 1, Lith. of Wagner & McGuigan 100 Chestnut St. Phila. This map shows all of Pennsylvania, Connecticut, Rhode Island, Massachusetts, and parts of the surrounding states. Connecticut claimed all of the state between the 41 and 42 parallels extending into Ohio. This map comes from History of Wyoming, in a series of letters, from Charles Miner, to his son William Penn Miner, Esq. Philadelphia, J. Crissy 1845. The book also contains a map titled MAP OF WESTMORELAND SHOWING THE SURVEYS, a land survey map not shown here. The map was originally folded and this copy has been mounted on linen. Wyoming refers to the Wyoming Valley of Pennsylvania, i.e. the Wilkes-Barre, Scranton area. Intaglio print, blank verso. Scale: 1 inch ~ 35 miles. Size: 9 x 22 inches. .
	1845.3 ETATS-UNIS. An undated and anonymous French map and page 30 from a book or atlas, this map shows the United States west to beyond the Mississippi, with boundaries in red and blue hand color. Pennsylvania is incorrectly shown without the Erie triangle, which is common for French maps of the period. Missouri and Florida (1845) appear to be states and perhaps Arkansas. Iowa (1846) and Wisconsin are not so indicated, so this map is dated circa 1845 here. There is an inset view of New York at lower right. Intaglio print, blank verso. Longitude west from Paris. Scale:1 inch = 255 miles. Size: 8.25 x 11 inches.
	1845.4 PENNSYLVANIA. This map is believed to come from the General Atlas of T.R. Tanner Philadelphia 1845, a rather rare mid-19th century atlas. Insets of Philadephia and "Pittsburg" are included at top. T.R. Tanner was Henry Schenk Tanner's son and he re-issued several of H.S. Tanner's works. The General Atlas was apparently a new undertaking, although reminiscent of Finley's work. Carbon and Wyoming counties are shown but not Elk or Blair, so the map dates 1843-46. The Clearfield – Centre County boundary is shown incorrectly, as is Lehigh - Northampton. There is no page number or any indication of this map being bound. Intaglio print, blank verso, longitude from Greenwich at bottom, from Washington at top. Scale: 1 inch = 30 miles. Size: 9.5 x 11.5 inches. .
	1846.1 MAP OF PENNSYLVANIA, from State Book of Pennsylvania Containing an Account of the Geography, History, Government, Resources and Noted Citizens of the State; with a Map of the State and of Each County, by Thomas H. Burrowes, Uriah Hunt & Son, 44 Fourth St., Philadelphia. This book was intended for Pennsylvania schools and has a 4.5 x 7 inch state map at the front shown here, and small 2 x 3 inch maps of each county, illustrated here by Westmoreland County .
	1846.2 UNITED STATES [on sheet with] NEW BRUNSWICK, NOVA SCOTIA &C., London: C. Smith & Son, 172 Strand. Pages 53-54, believed to be from Smith's New General Atlas, the latest date found for which is 1830, but there may have been later editions. the map shows Arkansas (1836) and Michigan (1837) as states, but not Iowa. so probably circa 1837-46. The eastern United States extends to approximately the 104th parallel and the frontier consists of Iowa territory, Missouri territory, Indian territory, and a large Texas with the river systems and topography shown. The National Road is shown from Baltimore to St. Louis. The right third of the sheet is a map of the eastern Canadian provinces. Outline hand color intaglio steel engraving, blank verso, longitude west from Greenwich. Scale: 1 inch = 124 miles. Size: 14 x 23 inches. .
	1847.1 MAP NO. 3. UNITED STATES, entered according to act of Congress in the year 1847 by Cady & Burgess. The map also includes New York and New Jersey. The verso is page 27 from a geography by R. C. Smith. The 1840 census population is shown on the map. Blank verso. Scale: 1 inch = 50 miles. Size: 10.5 x 8.5 inches.
	1847.2 THE KEY STONE STATE, PENNSYLVANIA AND HER EMINENT MEN. Apollos W. Harrison, Philadelphia: No. 81/2 South 7th st. 1847. Compiled & Drawn by A.W. Harrison, Philadelphia. Engraved by Edwd Yeager, Philadelphia. There is also a title in German: DER SCHLUSSTEIN-STAAT. PENNSYLVANIA. UND SEINE GROSSEN MAENNER. This large wall map has small vignettes around the border of Hopkinson, Fulton, Wayne, Decatur, Rittenhouse, Rush, West, Morris. Above the titles are small figures of Penn and Franklin. It is left to the reader to uncover why these men are "eminent." Harrison was a Philadelphia dealer in "books, maps and ink" from about 1843 to 1877. He manufactured inks, hair dye, and 'flavoring extracts' for cooking, and is listed as publisher for several books. This is the only map he is known to have made. The only copies seen are in the state archives and at Penn State Library. This copy is in decent shape, backed with linen and varnished, with minor missing material at the top right and left edges; and detached from the original rods. Blank verso, longitude from Washington. Scale: 1 inch = 7 7 miles. Size: 42 x 53 inches. .
	1848.1 MAP OF PENNSYLVANIA, Constructed from the County Surveys authenticated by the State; and other original Documents. Revised and Improved under the supervision of Wm. E. Morris Civil Engineer, upon data procured in each county, approved by the Philadelphia County Board under authority of the Legislature. Published by R. L. Barnes, NE corner of Seventh and Market Sts. Philadelphia 1848. Engraved by Edwd. Yeager. This large wall map, like John Melish's map of 1822, was prepared from state authorized county surveys. The counties are outlined in red with shades of brown (originally yellow?) used to differentiate townships. There are three tables on the bottom: county statistics, anthracite coal trade, public works. Wall maps from the 19th century seldom survive in good condition, and this one is no exception as these views of the title area and northwest show. Blank verso, longitude from Washington top and bottom. Scale: 1 inch = 4.25 miles. Size: 52 x 76 inches.
	1848.2 TERMINATION OF ROUTES FROM PHILA.&BALTIMORE TO PITTSBG.&WHEELING AND ALSO TO THE VIRGINIA SPRINGS and CONTINUATION OF ROUTES FROM PHILA. TO BALTIMORE&WASHN. ALSO TO POTTSVILLE, HARRISG. &C. WITH PART OF THE ROUTES TO PITTSBURG&C. Drawn & Engraved by W. Williams N.Y. Entered …..in the year 1848 by W. Williams… These two maps show roads, canals, and rail lines between the named points. They are from Appletons’ Illustrated Handbook of American Rravel. Also seen as from Appleton's Northern and Eastern Traveller's Guide, published by Appleton & Co., New York, 1851; and there were probably several editions of these books. The first map shows Pennsylvania from Mercer south to Staunton in Virginia and east to Bedford. The second shows the state from Reading west to Bellefonte and north to Williamsport, then south to Washington. Both are double page maps from a small book and are just two of many other similar maps covering the populated north, mid-west, and south. Lithograph, blank verso. Scale: 1 inch = 30 miles. Size: 7 x 5 inches. .
	1849.1 MAP SHOWING THE ROUTE OF THE OHIO & PENNSYLVANIA RAIL-ROAD TO CONNECT PITTSBURGH WITH THE GREAT WEST. Solomon R. Roberts Chief Engineer 1849. This is really more a map of Ohio and Indiana than Pennsylvania, but it shows the plans for extending rail lines through the midwest from Pittsburgh. It was plans like this that galvanized the businessmen and politicians of Philadelphia into building the Pennsylvania Railroad. Rail lines from Pittsburgh go straight west through Steubenville and north of the Ohio River into Ohio. The lines are marked to show those operating and planned. This map comes from: Report of the President and Directors of the Ohio and Pennsylvania Railroad Company by Solomon W. Roberts, Chief Engineer, Philadelphia 1849. Blank verso. Scale: 1 inch = 30 miles. Size: 9.25 x 15 inches.
	1849.2 PHILADELPHIA, Published by A. McElroy, Philadelphia. M.H. Traubel Sc., N. Friend, Lith. Office:141 Walnut St., Printed at P.S. Duval's Lith. Establmt. It is unclear why both Friend and Duval are named as lithographers, perhaps Traubel worked for Friend and prepared the stone and Duval did the printing. It was about this time that Duval began installing steam driven printing equipment. This copy is backed by heavy cardboard, probably a good thing since the paper seems flimsy and appears to have been originally folded. Only the central city area is shown, a few buildings are identified. Archibald McElroy was a publisher of the Philadelphia City Directory in the mid-1800s, and this map is possibly from that yearly publication. Lithograph, blank verso (now). Scale: 1 inch = 1100 feet. Size: 17.25 x 14.5 inches. .