The big change in maps occurred in the 1880's and 1890's when maps with printed color began to appear. Maps from the first decade of the 20th century are similar to those from the last decade of the 19th century. Several traveller's pocket maps are shown here, and it is interesting that all of them show rail lines and none show roads. Rand McNally and Cram were the dominant map publishers, however the maps seen by the most people were probably the ones published in geography books by Frye and others.

	1900 PENNSYLVANIA, from Frye's Complete Geography - Pennsylvania Edition, by A. E. Frye, published by Ginn & Co. This map is a double page spread by E. Y. Farquhar, Del. and Bradley & Poates, Engr's, N. Y., and is similar to maps used in some other geography books. Only the western part of the state is shown here. The textbook has 181 pages with a 10 page Pennsylvania supplement and a 7 page supplement on United States Territories. It contains 21 single page maps, 3 double page maps, several black & white relief maps, and many illustrations. Size: 12.5 x 20 inches.
	1901 CRAM'S NEW TOWNSHIP AND RAILROAD MAP OF PENNSYLVANIA COMPILED FROM OFFICIAL SOURCES, by George F. Cram. There is a list of rail lines coded by color and number at the top, but no roads are shown on this traveller's map. Cram certainly 'crammed' a lot of info into this map. The paper is pasted onto linen cloth and folds into a  6 x 3.5 inch folder with a brown cover page containing an ad for the Northwestern Railroad. Blank verso. Scale: 1 inch = 11 miles. Size: 24 x 33 inches.
	1902 PENNSYLVANIA WESTERN PART, plate 73 from the 10th edition of Encyclopaedia Britannica., by The Century Co., 1897 and 1902, printed by Matthews - Northrup Works. The 10th edition of the encyclopaedia was published 1902-03. This same map was previously published in The Century Atlas of 1897. The individual counties are detailed and there is a 'Pittsburg' area inset at upper right. The companion map of the EASTERN PART of the state has an inset of Philadelphia. Blank verso. Scale: 1 inch = 17 miles. Size: 11.5 x 16 inches.
	1903 PENNSYLVANIA, by Dodd, Mead & Co., 1891 and 1903, and from an unknown atlas, possibly a Collier's. The map shows rail lines with county populations on the verso. Roads are not shown in this pre-automobile map, railroads were much more important. Scale:1 inch = 30 miles. Size 10 x 12 inches.
	1904 SCARBOROUGH'S MAP OF PENNSYLVANIA SHOWING ALL COUNTIES, TOWNSHIPS, CITIES, BOROUGHS, VILLAGES, POST-OFFICES AND RAILWAY STATIONS, published by the Scarborough Company, Boston 1904. Rail lines, suburban electric lines, and a few highways are shown. This large wall map, not all of which is in the image, is made of oil cloth material and has wooden rollers top and bottom. The verso contains population for 1900 and a gazetteer keyed to a grid around the map edge. The top also contains insets of Philadelphia and Panama, of all places, plus a legend and milage table. Scale: 1 inch = 6 miles. Size: 36 x 51 inches.
	1905 PHILLIPS SERIES OF TRAVELLING MAPS - UNITED STATES N. E. DIVISION, published by George Phillip & Son, London. This is an English pocket travelling map that folds into a 6.75 x 4.75 inch hardback blue cover . The paper is sectioned and pasted onto linen cloth to resist repeated folding. The map inside is titled THE UNITED STATES OF NORTH AMERICA (NORTHEASTERN DIVISION), J. Bartholomew F.R.G.S. Only the Pennsylvania region is shown here. There is an inset United States map with Oklahoma marked Indian Territory, which would date the map prior to 1907. Rail lines are shown but not roads, so travelers were expected to use the train. Blank verso. Scale: 1 inch = 50 miles. Size: 20 x 24 inches.
	1906 THE RAND MCNALLY VEST POCKET MAP OF PENNSYLVANIA SHOWING ALL COUNTIES, CITIES, TOWNS, RAILWAYS, LAKES, RIVERS, ETC., by Rand McNally & Co. Chicago. Rail lines are shown indexed by number, and there is a gazetteer on the verso. No roads are shown. This traveller's map folds into a 5.5 x 3 inch paper cover to which it is attached. It is printed on cheap paper and is difficult to unfold without tearing. Scale: 1 inch = 8.5 miles. Size: 27 x 39 inches.
	1907 PENNSYLVANIA, page 51 from New Encyclopedic Atlas and Gazetteer, Collier & Son, N. Y. The map is by Dodd, Mead & Co., A. L. Poates Engr'g Co., N. Y. Rail lines and canals are shown. Collier published an identical map in another atlas except it was tinted yellow instead of pink. A map of South Carolina is on the verso. Scale: 1 inch = 24 miles. Size: 11 x 16 inches.
	1908 SOIL MAP, RECONNOISSANCE SURVEY NORTHWESTERN PENNSYLVANIA SHEET, Field Operations, Bureau of Soils 1908. U. S. Dept. of Agriculture. A. B. Graham Co. Lith. Wash. DC. This map only covers the northwestern part of the state as the title indicates. The soil types are color coded, local roads are shown, and the map is based on U. S. Geological Survey maps. More detailed soil maps were prepared for each individual county. Blank verso. Scale: 1 inch = 4 miles. Size: 22 x 39 inches.
	1909 PENNSYLVANIA, WESTERN SECTION, pages 73-76 from Rand - McNally Indexed Atlas. A 1909 railroad map of Pennsylvania published in a commercial transportation and shippers atlas. The map has a numbered legend of railroads and the railroads on the map are keyed to this legend, approximately 120 are listed. The map shows topographical features as well as railroad lines, roads are not shown. An index of towns is on the verso. This map is similar to the one shown for 1906, but in a different format. Only a section centered on Indiana is shown here. There is a companion EASTERN SECTION map. Scale: 1 inch = 8.5 miles. Size: 20.5 x 28 inches.