SEARCH UNIVERSITY LIBRARIES
These links provide access to the digitized (online) Sanborn Fire Insurance Maps for a state or area. The content is provided by the owning library and is subject to their terms and conditions.
Many libraries have scanned (digitized) their own paper collections of the Sanborn Maps and put them into online collections for all researchers to use.
Most are the maps currently in the public domain (no longer subject to copyright restrictions). Generally they are in color and have search interfaces as well as index maps to help you find your location.
Use the link below to find out who may have the maps you are looking for.