Collective bargaining agreements with Lehigh Portland Cement Company, 1946 and 1967.
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Lehigh Portland Cement Company
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United Cement, Lime, and Gypsum Workers International Union. Local 106 (Mason City, Iowa)
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Local 106 was organized in the 1930s as a federal labor union of the AFL and later as a local of the United Cement, Lime, and Gypsum Workers International Union. From the description of Collective bargaining agreements with Lehigh Portland Cement Company, 1946 and 1967. (Iowa Sate Historical Society). WorldCat record id: 44679144 ...
United Cement, Lime, and Gypsum Workers International Union
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