The Marx brothers

Harpo speaks!

Harpo Marx

1961

Monkey Business

Simon Louvish

1999

Groucho

Stefan Kanfer

2000

Son of Harpo speaks!

Bill Marx

2007

Groucho, Harpo, Chico, and sometimes Zeppo

Joe Adamson

1973

You Bet Your Life

Stuart M. Kaminsky

1978

The Marx Brothers as social critics

Martin A. Gardner

2009

Alone on the Ice

Groucho Marx

1974