Full credits

On screen, in billing order

1. 1Cecil Cunningham
2. 2Chico Marx
3. 3Cyril Ring
4. 4Groucho Marx
5. 5Harpo Marx
6. 6Harry Woods
7. 7Rockliffe Fellowes
8. 8Rolfe Sedan
9. 9Ruth Hall
10. 10Thelma Todd
11. 11Tom Kennedy
12. 12Zeppo Marx

• Herman J. Mankiewicz