User:Czar/drafts/Greenback compromise
- Avrich, Paul (1984). The Haymarket Tragedy. Princeton University Press. ISBN 978-0-691-04711-9.
- Goyens, Tom (2007). Beer and Revolution: The German Anarchist Movement in New York City, 1880–1914. University of Illinois Press. ISBN 978-0-252-03175-5.
- https://books.google.com/books?id=4MQnAQAAMAAJ&pg=PA288