- Conference of Studio Unions27
- California. State Relief Administration7
- Workers Alliance of America7
- Los Angeles Railway4
- American Federation of Labor3
- Paramount Pictures3
- RKO Pictures3
- Chambers, Walter2
- United Brotherhood of Carpenters and Joiners of America2
- Warner Bros.2
- Beck, Dave, 1894-19931
- Bioff, William Morris, 1900-19551
- Brotherhood of Railroad Trainmen1
- Congress of Industrial Organizations (U.S.)1
- Cook, W.P.1
- Feingold, Joseph (Milliner)1
- Harris, P.B.1
- Haskins, Samuel Moody, 1872-19481
- Hill, George James, 1897-19701
- International Alliance of Theatrical Stage Employees and Moving Picture Machine Operators of the United States and Canada1