Scope and Content Single pocket expanding folder containing the following documents:1. Bound typescript, "Interpretation of patent description of the boundaries of Rancho Los Cerritos and Rancho San Pedro," S.M. Marshall, 33 pp, with table of contents and two cover letters. Report produced for PD&TC re interpreting boundary description between San Pedro and Los Cerritos claims, navigability and tidal character of San Gabriel River, and City of Long Beach claim to channel no. 1; four maps...