Contains minutes, dues books, and membership records of the San Francisco-based International Association of Machinists (IAM) Lodge #68, and one ledger of minutes pertaining to the Golden West Lodge. The earliest material in the collection are five membership dues ledgers from 1900-1903, membership applications (fees) from 1903-1940 and executive and regular meeting minutes from 1908. The minutes from 1908-1946 are complete. The bulk of the collection is comprised of bound volumes of the minutes from the regular and directors meetings, with an assortment of documents pertaining to the union's business. Where such papers were found loose they have been placed in into acid free folders immediately following the volume to which they pertain. A typical volume includes correspondence from the law and legislative committee to the IAM Grand Lodge, correspondence from the San Francisco Labor Council, statements from the financial secretary, annotated local ballots, accounts of lodge discipline of unruly brothers, sick pay and boiler plate agreements. The historical significance of Lodge # 68 is reflected in the minutes of the regular meetings which include a pledge of support for brother IAM unionists in LA on trial for an alleged dynamite attack on Oct 1st 1910 at the LA Times Building, a resolution to support Ed Nolan, a prominent member of Lodge #68 who was arrested in connection with the 1916 Prepardness Day bombing, a resolution praising President Woodrow Wilson's intervention in the Mooney case, IAM Lodge #68's overtime ban and subsequent clash with the NWLB, and the dismissal of Martin Joos and Arthur Burke from Bodinson manufacturing company by the Navy. The numerous skirmishes with the Grand Lodge, including the build up to the suspension of Lodge #68 are also recorded in the minutes of the lodge meetings.