Arbitration records, records of two employer associations, the Industrial Association of San Francisco and the Waterfront Employers Association, materials from the (U.S.) Pacific Coast Maritime Industry Board during World War II, studies by the Institute For Science and Labor in Japan, 1931-1932, and a strikes series, 1934-1949, including materials on the 1936 Salinas Lettuce Strike by the Fruit and Vegetable Workers Union of California, Local 18211 and on the San Francisco 1934 Maritime Strike.