Scope and Content Reports and correspondence, most to or from Henry M. Isaacs re titles to and navigability of tidelands in area around mouth of San Gabriel River, including:Cover of original binding by Henry M. Isaacs reads "Navigability and tidelands: riprap, Dominguez Creek, San Gabriel River, Cerritos Channel, Long Beach Salt Company (formerly San Pedro Salt Co.) v SPLA&SLRRCo., bulkhead near East San Pedro, Harbor Development, Dredging and fills, Point Mugu Lagoon and wharf, tides,...