Map Collections 1500- Library of Congress' Geography & Map Division
Sanborn Maps
Historical Maps Perry-Castañeda Library Map Collection, University of Texas at Austin.
Campaign Atlases Department of History at the United States Military Academy
Online maps from their campaign atlases.
Historical Map and Chart Collection U.S. Office of Coast and Geodetic Survey
David Rumsey Map Collection
Over 150,000 maps online.
"The collection focuses on rare 16th through 21st century maps of North and South America, as well as maps of the World, Asia, Africa, Europe, and Oceania."
Images of Early Maps on the Web WWW-Virtual Library: History of Cartography
North America Map Archive OSSHE Historical & Cultural Atlas Resource
U.S. Congressional Serial Set Maps (Fresno State access)
Sanborn Maps--California. Proquest (Fresno State access)