American Memory (The Library of Congress)
Gateway to rich primary source materials relating to the history and culture of the United States.The site offers more than 5 million items from more than 90 historical collections - including these selected image collections:
Sample American Memory keyword search:
Open access image and primary source database, provided by the University of California. Includes historic images of California cities, streets, landscapes, and maps.
Digital Sanborn Maps, 1867-1970 (Arizona)
Provides digital access to historic maps of towns and cities in Arizona.