International Association of Machinists and Aerospace Workers District Lodge 751 organized in Seattle, Washington, in 1935. It represents employees at Boeing Company. Its collection (1970s-2000s) includes digital files of documents, news clippings, periodicals, audio, photographs, and correspondence.

John "Buddy" Sugg worked as a union machinist at Eastern Air Lines in the 1980s and was a member of the International Association of Machinists and Aerospace Workers (IAMAW). The John Sugg collection consists of video cassette tapes (VHS) on Eastern Air Lines, employee services, and broadcasts on pertinent topics for workers of the time.

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.