International Association of Machinists Local Lodge 89 existed in Cheyenne, Wyoming during the late 19th and into the twentieth century. The records includes minutes, financial records, correspondence, rolls and dues lists, administrative records of the Ladies Auxiliary, railroad maintenance booklets, and other general administrative records and items.

The collection consists of ledger books (including minutes, cash books, membership rolls and dues) that document the business activity of the Machinists' Local Lodge 846 for the years 1913-1956.