The Geography and Map Division of the Library of Congress holds more than 4.5 million items, of which these Map Collections represents only a small fraction, those that have been converted to digital form.
The David Rumsey Collection focuses primarily on cartography of the Americas from the 18th and 19th centuries, but also has maps of the World, Asia, Africa, Europe, and Oceania. The collection includes atlases, globes, school geographies, books, maritime charts, and a variety of separate maps, including pocket, wall, children's and manuscript.
From the U.S. Geological Survey's (USGS) National Geospatial Program, The National Map is a collaborative effort among the USGS and other federal, state, and local partners to improve and deliver topographic information for the nation.
Sanborn Maps are historical maps that include information such as the outline of each building, the size, shape and construction materials, heights, and function of structures, location of windows and doors. The maps also give street names, street and sidewalk widths, property boundaries, building use, and house and block numbers. This database is for California only.
Census Bureau maps show how the population of the U.S. is located with respect to factors such as ethnic background, geographic area, political boundaries, and other special purpose groupings. Maps are organized into two categories: Reference Maps and Thematic Maps. Select the description link located beneath each map title to access more information about each map.