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"The Sanborn map collection consists of a uniform series of large-scale maps, dating from 1867 to the present and depicting the commercial, industrial, and residential sections of some twelve thousand cities and towns in the United States, Canada, and Mexico. The maps were designed to assist fire insurance agents in determining the degree of hazard associated with a particular property and therefore show the size, shape, and construction of dwellings, commercial buildings, and factories as well as fire walls, locations of windows and doors, sprinkler systems, and types of roofs. The maps also indicate widths and names of streets, property boundaries, building use, and house and block numbers." Description from the Library of Congress
The Norman B. Leventhal Map CenterThe Norman B. Leventhal Map Center at the Boston Public Library contains over 200,000 historic maps and 5,000 historic atlases from the 15th century to the present. Browse through digitized versions online by location, subject, author, date, publisher and projection.
Historical Maps ArchiveFrom the University of Alabama Map Library. Maps of United States and the world. Browse by geographic location and time period.
World Digital LibraryLinks to over 5,000 primary documents and images from collections around the world. Sponsored by the United Nations Educational, Scientific and Cultural Organization. Search by date, era, country, continent, topic, and type of resource.