This week’s map is a historical map of the valley from the Library of Congress. [Maps of California–counties Sonoma to 1937]. Map: Library of Congress. See the original → The Thursday edition, by email Subscribe
![[Maps of California--counties Sonoma to 1937]](https://tile.loc.gov/image-services/iiif/service:gmd:gmdtitlecolmaps:ca:-2:05:ca-205:ca-205-01-01-r/full/1200,/0/default.jpg#h=1149&w=1439)
