Subject files: "Mass Transit" (also: "Mass Transportation," "Rapid Transit"), some with sub-headings,

Valuation, appraisal and audit reports, certificates and summaries of William H. Babcock and Sons, Inc., 1924-1936. Also, Babcock's files of the Santa Monica, California and Bunker Hill, Los Angeles Redevelopment Projects; material concerning mass transportation, primarily in Los Angeles; pamphlets and reports.