Nice shout-out for the Sonoma County Library’s maps and digital collections:
Curious about the history of your parcel or maybe how downtown Healdsburg was laid out back in the day? The Sonoma County Library has a vast collection of historic maps including township maps, plat maps, Sanborn maps and historical atlases.
A complete set of Sanborn Insurance Company maps can be found at the library on microfilm. These maps were originally created to calculate fire insurance risks in a community. Lauded by historians and preservationists alike, they are a vital component in identifying what was located where in great detail. [read full story]