Beffel, John Nicholas, 1887-1973
| John Beffel Papers | Abstracts |
| Industrial Workers of the World Records | Abstracts |
| League for Mutual Aid Records | Abstracts |
| Harvey O'Connor Papers | Abstracts |
| Workers' Defense League Records | Abstracts |
| John Beffel Papers | Abstracts |
| Industrial Workers of the World Records | Abstracts |
| League for Mutual Aid Records | Abstracts |
| Harvey O'Connor Papers | Abstracts |
| Workers' Defense League Records | Abstracts |