Welcome to the Sonoma County History & Genealogy Library where thousands of historical books, manuscripts, newspapers, maps and photographs await your discovery.
The Sonoma County Library’s local history and genealogy collection is a community resource of immense value that was first established in the Santa Rosa Central Library’s California Room. In 1994, the collection was moved to a separate building located adjacent to the Central Library and commonly referred to as the “Annex.” In 2002, the Sonoma County Library Commission, governing board of the county-wide library system, adopted a new mission statement for the local history and genealogy division and renamed it the Sonoma County History & Genealogy Library. Services, resources, and technologies continue to grow to meet the demands of those we serve.
Some of the resources available include:
Personalized one-on-one instruction in historical and genealogical research
Over 45,000 photographs, many of which are available online as part of the Sonoma County Local History & Culture
A comprehensive collection of Sonoma County historical works, county, family, and property histories
Access to the Sonoma County Archives, which hold many of Sonoma County’s earliest court, naturalization and tax records
The Sonoma County History Index, which has thousands of references to County events, places and people
Santa Rosa newspapers on microfilm from 1857 through 2019, as well as other county newspapers for various locations and dates
Wide ranging newspaper clipping files
The California Indian Library Collection
On-line subscriptions to HeritageQuest, Ancestry.com, GenealogyBank and the San Francisco Chronicle 1865-1922
Select California city directories and voter registrations
Sanborn Fire Insurance Maps
Indexes to local cemetery, marriage, birth, death and militia records
Is genealogy your interest, not just in Sonoma County, but anywhere in the world? If so, you’ve come to the right place. Our resources for world-wide genealogical research are vast. We have one of the largest genealogical collections on the West Coast.
Besides several thousand genealogical books and journals, we also provide access to first-rate genealogical research databases like HeritageQuest Online (includes 28,000 digitized books), Ancestry.com Library Edition, and digitized newspaper sources.
Sonoma County Archives
The Sonoma County Archives includes a portion of the County of Sonoma's archival records, as well as a variety of other archival collections of primary historical documents relating to Sonoma County. Upon request, materials may be brought from an off-site storage facility for in-person use at the History & Genealogy Library. Visit the Sonoma County Archives page for more details.