Incoming Resources
- Monkey business, the lives and legends of the Marx Brothers : Groucho, Chico, Harpo, Zeppo, with added Gummo, Simon Louvish
- The unknown Marx brothers, a unique look at film's most original comedy legends, Crew Neck Productions ; written and produced by David Leaf and John Scheinfeld
- The Marx Brothers collection
- The Marx Brothers at the movies, by Paul D. Zimmerman and Burt Goldblatt
- Groucho, Harpo, Chico, and sometimes Zeppo; a history of the Marx Brothers and a satire on the rest of the world
- Hail, hail, euphoria!, presenting the Marx Brothers in Duck soup, the greatest war movie ever made, Roy Blount Jr
- Groucho, the life and times of Julius Henry Marx, Stefan Kanfer