The maps shown here cover the rest of the century with at least one map per decade.

	1951 PENNSYLVANIA, published and printed by the Thos. D. Murphy Co., Red Oak, Iowa. The map occupies about two-thirds of the sheet and contains insets of Pittsburgh and Philadelphia at the top. At the bottom is a 1951 calendar which is the date used here, although it was probably printed in 1950 as advertisement for an insurance company in Lancaster. Main roads are shown with bright red lines, although this obviously is not a road map. The verso has a gazetteer with 1950 census. Scale: 1 inch = 15 miles. Size: 15.5 x 20 inches (map).
	1960 GEOLOGIC MAP OF PENNSYLVANIA, published by the Commonwealth of Pennsylvania, Department of Internal Affairs, Topographic and Geological Survey, printed by Williams & Heintz Map Corp., Washington. This is a small section of a huge map and shows the Allegheny front in the Altoona region. The colors denote the surface geological layers. Blank verso. Scale: 1 inch = 4 miles. Size of complete map 58 x 82 inches.
	1974 ALLEGHENY RIVER - CHART NO. 1, a river navigation map showing a section of the river through Pittsburgh. This map is from Allegheny & Monongahela Rivers Naviagtion Charts, published by the Corps of Engineers, Pittsburgh District 1974, which is a 40 page set of charts used by river pilots. Of course, this set is now out of date.
	1985 (Southwestern Pennsylvania) This is an infared image taken from space by the Landsat satellite and published by the United States government. It is printed on heavy photographic paper and dates from the mid 1980s. Only part of the complete image is pictured and shows the Youghiogheney River in southwest Pennsylvania running northwest from the Youghiogheney Reservoir to join with the Monongahela River partially shown at the left edge. Vegetation appears red in this image and reflective surfaces in white. The white dots are clouds hung up on the ridge tops. The dark, splotchy areas are towns; the one in the center of the image next to the river is Connellsville. Uniontown is slightly south and Greensburg is at the top of the image. Blank verso. Scale: 1 inch = 4 miles. Size of complete image 24 x 30 inches.
	1998 PENNSYLVANIA'S HERITAGE REGIONS, published by the Pennsylvania Department of Conservation and Natural Resources . A colorful figurative free map advertising state tourist attractions with no geographical detail. Text on the verso. Scale: 1 inch = 15 miles. Size: 18 x 28 inches.
	2000 COMMONWEALTH OF PENNSYLVANIA LAND COVER MAP 66, Interior-Geological Survey, Reston VA 2000. U. S. Department of the Interior, U. S. Geological Survey. This map displays types of land cover using 15 different colors and categories. The major categories are Developed (reddish), Forested (greenish), Cultivated (yellowish), Barren (grayish), and Water (bluish). It was prepared in partnership with the Pennsylvania Topographic and Geologic Survey and is available from the state Department of Conservation and Natural Resources or from the U. S. government. Only a section around Pittsburgh from this large and beautiful map is shown here. Blank verso. Scale: 1 inch = 8 miles. Size: 26 x 40 inches.
	2003 GEOLOGIC SHADED-RELIEF MAP OF PENNSYLVANIA, compiled by Christine E. Miles, Interior-Geological Survey, Reston VA 2003. Department of Conservation and Natural Resources, Bureau of Topographic and Geologic Survey, Pennsylvania. This is a state map issued jointly with the U. S. government. It displays types of surface structure using both color and shaded relief. Streams and outlines of counties are also shown. This is the latest successor to Henry Darwin Rogers' classic 1858 geological map. This map is number 67 and is a companion to the one above. Blank verso. Scale: 1 inch = 8 miles. Size: 32.5 x 44 inches.