Union shop (amendment to the Railroad Labor Act.), 1951-1952

International Association of Machinists and Aerospace Workers, District Lodge 143 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. These materials detail District Lodge 143's interactions with various airlines including Northwest, Delta, Alaska Air, Air Wisconsin, and Republic Air. This includes work rules, contract negotiations, and other types of correspondence. In addition, the records include extensive materials relating to district officer elections and the internal management of the union. Lastly, the records boast an extensive collection of District Lodge periodicals including District 143 Bulletin, The Northern Light, and Northwest Airlines Bulletin.