Color Sanborn Symbol Key
Scanned color image of Sanborn Symbol Key through the University of California, Berkeley
Color Sanborn Symbols
Scanned color images of Sanborn symbol keys through the Library of Congress
How to Interpret Sanborn Maps
Scanned symbol keys and text from Sanborn Map Company descriptions made available by Historical Information Gatherers
Sanborn Abbreviation and Symbol Key
Available for free download from EDR
Sanborns at EDR
Environmental Data Resources owns the rights to the Sanborn maps. Link on this page to downloadable PDF of abbreviations that appear on Sanborns
THE Sanborn Map Company
Yes! They are still in business! No longer making fire insurance maps but still in the business of geospatial information
About the Library of Congress Sanborn Collection
Background information about Sanborn fire insurance maps at the Library of Congress. Part of the Library of Congress’s online Sanborn collection.
Library of Congress Geography and Map Division Sanborn Online Checklist
Searchable database of the fire insurance maps published by the Sanborn Map Company housed in the collections of the Geography and Map Division; based on Fire Insurance Maps in the Library of Congress (1981)