Historical maps USA, old maps America, vintage American atlases. Many free online collections of maps from US history.
Census Atlas of the United States – Vintage American Atlases
Containing almost 800 maps. Data from decennial censuses prior to 2000 support nearly 150 maps and figures, providing context and an historical perspective.
Great Lakes Maps, Atlases & Map Collections – Historical Maps USA
For the Great Lakes region, at “History of the Great Lakes States”.
Library Research Guide (LibGuide) – Internet Sites with Online Map Collections for U.S. History – Historical Maps USA
This research guide from the librarians at Bowling Green State University contains links to a large number of websites with map collections for U.S. history.
Historical Atlases and Maps of U.S. and States – Vintage American Atlases
Contains rotating animated maps showing county boundary changes. Past and present maps of US are overlaid so that you can see the changes in county boundaries, downloadable County D.O.T. Maps, and state atlas maps.
Historical Maps Online – Old Maps America
Maps charting the last 400 years of historical development in Illinois and the Northwest Territory. 420 items. Univ. of Illinois at Urbana-Champaign.
Illinois Maps, Map Collections & Gazetteers – Historical Maps USA
At “History of the Great Lakes States”.
Indiana Maps, Map Collections & Gazetteers – Old Maps America
At “History of the Great Lakes States”.
Iowa Counties Historic Atlases – Vintage American Atlases
The University of Iowa Libraries
USGS Maps for 50 U.S. States – Old Maps America
Sets of USGS maps for every state. 60,000 maps in all. Internet Archive.
Lewis & Clark Expedition Maps – Old Maps America
86 hand-drawn maps by members of the expedition. Beinecke Rare Book & Manuscript Library, Yale University.
Maps of American Westward Migration – Old Maps America
63 maps, mostly of Mormon migration in the mid-19th century. Mountain West Digital Library.
Maps of Railroads in the U.S. – Historical Maps USA
Maps of Railroads in the Western U.S.
51 items at the first link, and 32 in the second, mostly from the 19th Century. Beinecke Library, Yale University.
Michigan Maps, Map Collections & Gazetteers – Historical Maps USA
At “History of the Great Lakes States”.
Ohio Maps, Atlases & Map Collections – Old Maps America
At “History of the Great Lakes States”.
Panoramic Maps of Cities and Towns, 1800-1899 – Old Maps America
Library of Congress sub-collection
Railroad Maps, 1828-1900 – Historical Maps USA
623 maps. Railroad maps and regional, state, and county maps showing “internal improvements” of the past century. Library of Congress.
Road Maps of New England, ca. 1925 – Old Maps America
From the Automobile Green Book, published by an auto association.
Sanborn Maps at Library of Congress
The Sanborn maps are detailed maps of cities produced by fire insurance companies. This collection has over 25,000 sheets from over 3000 city sets in about 35 U.S. states, and Canada and Mexico. Library of Congress.
U.S. National Parks and Monuments Maps – Historical Maps USA
The Perry-Castaneda collection at University of Texas at Austin Libraries.
United States Historical City Maps – Perry-Castaneda Map Collection – Old Maps America
University of Texas at Austin Libraries
United States Historical Maps at the Perry-Castaneda Map Collection – Historical Maps USA
University of Texas at Austin Libraries
Wisconsin Maps, Map Collections & Gazetteers – Old Maps America
At “History of the Great Lakes States”.