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MSS 015 Box 6 Folder 76: Letters – Willer Manufacturing Company, Willer Manufacturing Company
MSS 015 Box 6 Folder 77: Letters – Wolff, L. Manufacturing Company, L. Wolff Manufacutring Company
MSS 015 Box 6 Folder 78: Letters – Yale and Towne Manufacturing Company, Yale and Towne Manufacturing Company
MSS 015 Box 6 Folder 79: Letters – Yetter, Elmer C., Elmer C. Yetter
