Map images, records, and indexing for maps published in Reports and Documents of the 65th Congress, 2nd session through the 92nd Congress, 2nd session. As of April 2012, there are 73,621 maps available. U.S. Congressional Serial Set Maps is a collection of primary source material detailing all aspects of American history. Historical maps are available for each state and for territories prior to becoming states. Thematic maps by subject include armed conflicts, discovery and exploration, environment and natural resources, Indian Affairs, Science and Technology, and much more.
