Six pocket expanding folder containing:

Boardbound typescript, "The Ranchos: Los Alamitos -- La Bolsa Chica -- Los Bolsas," by Francis Bates, 65 pp including table of contents. Report on patent descriptions, field notes, field books, and prior studies of surveys of the three named ranchos, with particular attention to meander lines along their coastal frontage. (1945)

Paperbound typescript with manuscript tables, "Appendix B. Calculation sheets, report of Francis Bates, 1945," 127 pp including table of contents. Calculations with diagrams supporting Bates' report of 1945.

Paperbound positive photostats, "Appendix C. Ranchos: Los Alamitos, La Bolsa Chica, Los Bolsas, Report of Francis Bates, 1945," by Francis Bates, 75 pp, including table of contents, with images of field book pages from George Hansen survey of San Pedro Rancho (1855-1856); Henry Hancock survey books 7, 12, 42, 73 (1857?); with equations for converting surveys to uniform 1927 North American datum (undated), and report of USC&GS on triangulation in California (1927).