The UCSB MIL contains maps, aerial photographs and other types of remote sensing data, and GIS data from around the globe, including an extensive collection of imagery throughout California. It is the largest such collection in any academic library.
View and download USGS historic topo quads for areas throughout the US. Less detailed, but more comprehensive in extent than the Sanborn maps, USGS topo quads are generally available from 1890-present.
The Library of Congress is the nation's oldest federal cultural institution and serves as the research arm of Congress. It is also the largest library in the world, with millions of books, recordings, photographs, maps and manuscripts in its collections.
The historical map collection has over 55,000 maps and images online. The collection focuses on rare 18th and 19th century North American and South American maps and other cartographic materials. Historic maps of the World, Europe, Asia, and Africa are also represented.
The American Geographical Society Library Digital Map Collection currently contains over 700 maps, ranging from early maps of Asia to historical maps of Wisconsin and Milwaukee, and other American cities, states, and national parks. The digital collection is under continuing development.
The California History Section's collection of maps exceeds 5,000 items. The collection features maps of individual cities and towns, as well as maps delineating overland trails and sea routes to California.