MAPS
Census Maps - Social Explorer provides entire history of U.S. population change from 1790 to 2000
Free public edition available through Reports or Maps sections.
CIA - atlases, maps, other publications
Color landform atlas of the United States
GNIS (Geographic Names Information System) - verify a place name, identify on which USGS topographic map place can be found . . .
Library of Congress - preeminent, broad general interest, collection of American maps on the internet
National Geologic Map Database -
University of Texas - Perry-Castañeda Library Map Collection - clear, concise format - all CIA maps are available here - sections on state maps, city maps, historical maps, and outline maps, clearly organized and easy to use
Ask a Librarian - citing maps used in reports
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