Code no. 35-64-5-1: Order of Railway Conductors, Brotherhood of Railway and Steamship Clerks, the Order of Railroad Telegraphers, Brotherhood of Railroad Signalmen, Brotherhood of Maintenance of Way, Masters, Mates, and Pilots of America

Code no. 35-64-5-2

Code no. 35-64-6

Code no. 35-64-8

Code no. 35-64-8: Pam Am Flight-Engineers, Switchmen's Union of North America, International Association of Machinists, American Train Dispatcher's Association, Brotherhood of Locomotive Firemen and Enginemen, Order of Railway Conductors and Brotherhood o

Code no. 35-64-8-1: International Longshoremen's Association, Airline Dispatcher's Association, Flight Communications Officers Association, Air Lines Communications Employees Association, Air Lines Pilots Association, Flight Engineer's International Assoc

Reels 5-16. Correspondence, case files, minutes, legal documents, pamphlets, clippings and statistical data regarding the activities of the United States National Mediation Board; the law suits brought before the National Railroad Adjustment Board; the Su