1. 30 negro strikebreakers flee in night attack on bunk cars. (1922 July 28). Milwaukee Journal 1–2.
2. Alexander, J. (1922, July 29). [Letter to Daniel Hoan]. Daniel Hoan Papers, Milwaukee County Historical Society.
3. Making and Unmaking the Working Class: E. P. Thompson and the “New Labor History†in the United States
4. Cooney, E. (1922, July 26). [Letter to Daniel Hoan]. Daniel Hoan Papers, Milwaukee County Historical Society.
5. A Left Critique of Class Reductionism