Contains agreements and related correspondence, between Lodge No. 1305 and Bay Area employers and trade associations. Seven files from the 1940s are arranged alphabetically by independent shop or employer association. Twelve files of 1940s independent shop agreements are also arranged alphabetically by shop name. The remaining 31 agreements from the 1930s-1940s are arranged alphabetically by employer association. The majority of agreements date from the war years and also include correspondence with the National War Labor Board, (NWLB). Much of the correspondence between San Francisco employers, Lodge No. 1305 and the NWLB concerns requests to raise the prevailing wage rates to combat the shortage of skilled machinists. The agreement and related correspondence between the automobile dealers of San Mateo and Lodge No. 1414, also describe the extent of union organization on the peninsula in 1939. Seven large files, 1935-1947, contain agreements and negotiations with the motor car dealers, which indicates the large number of auto mechanics who were members of Lodge No. 1305.