Tom Ducy served as General Secretary-Treasurer of the International Association of Machinists and Aerospace Workers (IAM), 1987-1993. Collection includes an IAM constitution, 1913; and minutes of IAM Lodge 47, also know as the Pioneer Lodge (Commerce City, Colo.),1889-1891; and a jurisdictional agreement that was part of a collective bargaining agreement with the Curtiss-Wright Corporation Airplane Division, St. Louis Plant, 1942.

International Association of Machinists and Aerospace Workers, Local Lodge 261 (Mobile, Ala.) contracts collection, 1948-1949, 1967-1998, primarily consists of printed contracts and includes a draft contract with associated correspondence, an agreement, and a printed report. The Local Lodge represented workers employed by Mobile Pulley and Machine Works in Mobile, Alabama.

The International Association of Machinists Local 34 (Kenosha, Wisconsin) was chartered in 1897. The local's records include correspondence, newspaper clippings, contracts, agreements, photographs and charters, documenting its history, 1905 to 1988.

The Iowa State Council of Machinists, made up of representatives of the districts and lodges of the International Association of Machinists and Aerospace Workers in the state of Iowa, formed in 1939. This collection contains minutes from the Iowa State Machinists Council (1952) and agreements of Local Lodge 831 (Cedar Rapids, Iowa).

The International Association of Machinists and Aerospace Workers, Strategic Resources Department Records consist of 1 audiotape and 4 folders of jurisdictional materials and collective bargaining agreements. Originally founded in Atlanta in 1888 as a trade union for railroad machinists, today the International Association of Machinists and Aerospace Workers represents workers in a large and diverse number of fields.

The collection consists of records of District Lodge 46 (Atlanta, Ga.) of the International Association of Machinists from 1937-1965. Consists primarily of correspondence and contracts relating to union recognition and contract negotiation.

International Association of Machinists and Aerospace Workers, Local Lodge 31 (Omaha, Neb.) records (1950-2020) consists of office files, benefits information, grievances, job descriptions, collective barganing agreements, training materials, correspondence, and photographs. Local Lodge 33 represented workers in the Omaha, Nebraska area. The largest industries were the Crown Packaging factory and various over the road trucking companies.

International Association of Machinists and Aerospace Workers, District Lodge 143 represented airline workers in the Great Lakes region of North America, specifically with Northwest Airlines. The records (1946-2009) consist of bylaws, benefits and retirement information, conventions proceedings, contracts, apprenticeship materials, publications seniority lists, committee materials, financial records, artifacts, photographs, audiovisual materials, and various types of correspondence.