Code no.8901: Plumbing, Heating, and Air Conditioning Contractor Members of the Lehigh Valley Construction Council and United Association of Journeymen and Apprentices of the Plumbing and Pipe Fitting Industry of the United States and Canada, Local 670, 1966-1972

Code no.8901: Plumbing, Heating, and Air Conditioning Contractor Members of the Lehigh Valley Construction Council and United Association of Journeymen and Apprentices of the Plumbing and Pipe Fitting Industry of the United States and Canada, Local 670, 1966-1972, Box: 10, Folder: 40. BLS Collection of Collective Bargaining Agreements (Part 3), 6178/003. Kheel Center for Labor-Management Documentation & Archives. https://archives.library.cornell.edu/repositories/4/archival_objects/1632525 Accessed January 18, 2026.