This collection contains records reflect various aspects of the operations of the Sonoma County District Courts. These include: registers of actions in civil and criminal cases heard in the District Court, and fees paid; liens for state and county taxes; lists of defendents and plaintiffs; minutes of each court session, court actions, and rules of the court.

This collection contains lists of trial jurors summoned for criminal court cases.

This collection contains crminal and civil justice dockets of the Vallejo Judicial Township Justice Court, including records of other justice courts under the County Court's jurisdiction

This collection contains records of the Sonoma County Juvenile Court, including minutes of the Probation Committee.

This collection contains records of the Sonoma County Municipal Court, under the jurisdiction of the Santa Rosa Judicial District, Sonoma County Central Judicial District and finally, Sonoma County Judicial District. Records include criminal and civil dockets, court trial minutes, etc.

This collection contains records of absentee voters compiled by the Sonoma County Registrar of Voters.

This collection contains ledgers listing the Small Claims Court docket between 1921 and 1976.

This collection contains official records and reports of the Sonoma County Superintendent of Schools and the Sonoma County Board of Education, including records of the Board of Examination, and the Trustees of Common Schools. Includes record primarily concerning matters such as teacher registrations, certification, training, student examination results and diplomas, etc. Also includes meeting minutes.

This collection contains records and related materials from the Sonoma County Superintendent of Schools includes financial documentation pertaining to the operations of the schools within the district, as well as data relating to the geographic division of school boundaries etc. The "Scrapbooks" include newspaper clippings concerning Sonoma County schools for the periods covered.

This collection contains records produced by the activities and operations of the Sonoma County Treasurer-Tax Collector such as records regarding Trust Fund expenditures and revenues, property tax, and auctions of lands sales owing to non-payment of property taxes