Western Sonoma County Historical Society

From the Wikipedia page

The Western Sonoma County Historical Society (WSCHS), founded in 1974 and incorporated in 1978, is a non-profit organization that preserves and maintains the heritage of Sonoma County, California.

The Society presents annual preservation awards to those who have done an outstanding job of preserving or restoring original architecture or have maintained the heritage of rural western Sonoma County when building new structures.

The website is.