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Atlascope Boston is a tool for exploring historic urban atlases in metropolitan Boston and telling stories about how places have changed over time.

Historical maps of Boston, New England, and the world.

Large collection of digitized military, maritime, manuscript, and topographical maps, as well as antique globes and digital mapping resources.

73,000 maps and atlases from the 16th-21st centuries.

Digitized, high-resolution historical maps from the collection at Harvard University.

This National Community Reinvestment Coalition (NCRC) website provides links to HOLC maps for 140 metropolitan areas, It also offers an analysis of how maps produced by the HOLC in the 1930s enforced racial segregation in cities across the United States by designating areas in which home loans should be denied to people of color, a practice known as "redlining."

Allows users to "Choose historical maps of London, and overlay them with information about a range of topics and themes."

Downloadable, full-color property maps of cities and towns across the United States. Pre-1924 coverage only.

This interactive version of the Agas Map (1561) allows users to find sites mentioned in contemporary records, as well as historical information on those sites.

These interactive maps from the Home Owners' Loan Corporation indicated the desirability of urban areas on the basis of racial distinctions.

A collection of digitized real estate maps from the late 19th and early 20th centuries. Courtesy of the Mass. State Library.

Contains extensive list of links to other online map collections.