Sanborn Fire Insurance Maps

"provides a searchable database of the fire insurance maps published by the Sanborn Map Company housed in the collections of the Geography and Map Division. The online checklist is based upon the Library's 1981 publication Fire Insurance Maps in the Library of Congress and will be continually updated to reflect new acquisitions. The online checklist also contains links to existing digital images from our collection and will be updated as new images are added."

"This list adds tens of thousands of additions, corrections and changes of ownership to three lists of Sanborn fire insurance maps issued by the Western Association of Map Libraries in the 1970s. Additionally it includes links (when available) to free online versions of the maps, and incorporates works by other firms such as Dakin, Baist, Hopkins and Robinson, some of which are usually referred to as real estate atlases but which some authorities consider to be fire insurance maps."

includes Alabama Inspection & Rating Bureau maps (1916-1963)

comprise an online collection of more than 300 bibliographic units in more than 3,000 map sheets dating from 1884 through 1923. Digitized maps are in the public domain and illustrate the development of more than 130 Florida cities.

provides a link to an Excel file for Historic Maps Collection with links to digitized maps

See the link for "Digitized Pennsylvania Sanborn Fire Insurance Maps"

The Marriott Library has digitized and georeferenced maps for Utah cities ranging from 1884 to 1950.