International Association of Machinists and Aerospace Workers

Erie machinists initially were chartered as an American Federation of Labor affiliate, then reorganized as National Association of Machinists' Local Lodge 101 (both in 1890). The local was re-chartered in August 1896, then re-organized in May 1901. The Records, 1896-1916, of Lodge 101 are composed principally of minutes and dues records.

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.