The collection consists of papers of the family of Henry Clay Baker, including property, estate, and financial documents. The materials are related to the Baker family of Walla Walla, Washington, and the Tibbetts family of Portland, Oregon. The majority of the collection consists of property-related documents such as deeds, abstracts of title, and plats. The estate papers relate mostly to Mary Tibbetts. The collection includes financial records of the Baker & Baker Company. A "fence book" for the estate of Dorsey Syng Baker describes properties in the state of Washington.