An Abstract of Title is a collection of documents summarizing the history of a parcel of land, such as deeds, mortgages, probates, taxes, or lawsuits, arranged in chronological order. The Archives has original copies for lands throughout Marin County, arranged...

This collection contains the files from Clinton T. Duffy compiled after his tenure as warden of San Quentin Prison, and reflects his interests in crime and criminals, rehabilitation and the abolition of the death penalty. Some files contain materials associated...

This collection spans the personal and business interests of Sigried K. Herzog, Sr., including Marin County Ice Co., Sleepy Hollow Dairy Co., Marin Hotel, Rafael Theater, and Aileen Apartments.

This collection contains ephemera related to the interests of William Vanderbilt in the local chapter of the Order of the Eastern Star, horticulture, the Marin County Historical Society, local civil defense, and his son Newell’s involvement with the 30th Infantry...

In 1980, Los Californianos, an organization that works to preserve the heritage of early Hispanic Californians in Alta California, photocopied the expedientes, or case files, for land grants throughout California. The original documents are located in the Spanish Archives of...