- Existence: 20th century (active)
Found in 1 Collection or Record:
Abstract Miscellaneous labor material including a 1914 copy of the Miners Bulletin, concerned with the copper strike in Calumet, Michigan. Also in the collection is a 1921 letter from Frank X. Martel, head of the Detroit Federation of Labor, discussing a proposal to move Labor Day from September to May.
Dates: 1914 - 1921