Historic Sonoma Plaza and Downtown Sonoma, California SONOMA COUNTY
HISTORICAL SOCIETY Welcome to the Bird's eye view of Santa Rosa, Sonoma County, Cal., 1876 BECOME
A MEMBER Support preservation, research, events, and education while connecting with others who care about Sonoma County’s history and cultural heritage. Learn More

Heritage Network

Heritage Network

Connect with museums, libraries, historians, and cultural heritage organizations across Sonoma County through a collaborative network dedicated to preserving and sharing local history.
Read More

Membership

Education Programs

Join a community that values local history. Membership supports preservation, educational programs, public events, and the stewardship of Sonoma County’s heritage.
Read More

Digital Collections

Digital Collections

Explore digitized photographs, archives, and historical materials from Sonoma County’s past, freely accessible for researchers, students, and community members.
Read More

  Sonoma Historian 2026, Vol. 64, No 3

Sonoma Historian 2026, Vol. 64, No 3
The Summer 2026 issue of Sonoma Historian explores Sonoma County’s place in the nation’s 250th anniversary through stories of local history, preservation, and community.

Inside, readers will find updates from the Heritage Network, news briefs on local preservation efforts and historical achievements, and an examination of the endangered Carrillo Adobe site. Feature articles explore the role of slavery and coerced labor in Sonoma County’s early development, Mariano Guadalupe Vallejo’s 1876 Centennial speech, and the life of Bob Thompson, the county’s first historian. The issue also reflects on past Independence Day celebrations, Juneteenth in Sonoma County, and the meaning of America’s 250th anniversary through a local historical perspective.

Upcoming Events

Finding History Day 2026
Veterans Memorial Building
1351 Maple Ave. Santa Rosa, CA
Saturday, Nov., 7, 2026, 10:00am — 2:00pm
Learn More

Sonoma County Heritage Network
Windsor Museum & Historical Society
311 Professional Center Drive
Rohnert Park, CA 94928
Saturday, October 10, 2026 10:00am — 12:00pm
Learn More

Historical Records Commission
County Clerk-Recorder-Assessor
Sonoma Room, 585 Fiscal Dr Rm 103/104
Santa Rosa, CA 95403
Thursday, August 13, 2026 4:00pm — 5:00pm
Learn More

Sonoma County Genealogical Society
Meets Online via Zoom
Saturday, July 18, 2026 1:00pm — 4:00pm
Learn More

Historical Sites

Historical Sites

Discover landmarks, parks, historic homes and buildings, and cultural sites across Sonoma County that reflect the region’s diverse history and enduring heritage.
Read More

Visit History in Sonoma County

Visit History in Sonoma County

Experience Sonoma County’s past by exploring its historic towns, museums, cultural centers, and landmark sites that reflect generations of regional history.
Read More

Volunteer

Speakers Bureau

Support preservation, research, events, and education while sharing your enthusiasm for Sonoma County history through volunteer opportunities.
Read More

What We do

The Sonoma County Historical Society brings local history to life through a wide variety of events, publications, and community partnerships. We collect and preserve historical materials, support research, and promote a deeper understanding of Sonoma County’s people, places, and past, connecting our shared history with the present and future.