International Association of Machinists and Aerospace Workers. District Lodge 143

International Association of Machinists and Aerospace Workers, District Lodge 143 represented the union employees that worked for Northwest Airlines, predominantly in the Great Lakes Region of the United States. The IAMAW District Lodge 143 records (1950s-2010) consist of grievance and arbitration files, contract negotiation materials, bankruptcy proceedings, and documents regarding the merger with Delta Airlines.