Biography
Arthur Adolph "Harpo" Marx (November 23, 1888 – September 28, 1964) was an American comedian and film star. He was the second oldest of the Marx Brothers. His comic style was influenced by clown and pantomime traditions. He wore a curly reddish wig, and never spoke during performances (he blew a horn or whistled to communicate). Marx frequently used props such as a walking stick with a built-in bulb horn, and he played the harp in most of his films.
Description above from the Wikipedia article Harpo Marx, licensed under CC-BY-SA, full list of contributors on Wikipedia.
Filmography
Cast Credits

The Marx Brothers: Hollywood's Kings of Chaos
Character: Self (archive footage)
MOVIE • 2016

Dalí & Disney: A Date with Destino
Character: Himself (archive footage)
MOVIE • 2010

Inside the Marx Brothers
Character: Self (archive footage)
MOVIE • 2003

The Our Gang Story
Character: Self (archive footage)
MOVIE • 1994

The Unknown Marx Brothers
Character: Self (archive footage)
MOVIE • 1993

The Ten-Year Lunch
Character: Himself (archive footage)
MOVIE • 1987

Classic Comedy Teams
Character: Self (archive footage)
MOVIE • 1986

Going Hollywood: The '30s
Character: (archive footage)
MOVIE • 1984

Hollywood Out-takes and Rare Footage
Character: Self (archive footage) (uncredited)
MOVIE • 1983

Showbiz Goes to War
Character: (archive footage)
MOVIE • 1982

The Marx Brothers in a Nutshell
Character: (archive footage)
MOVIE • 1982

Oops, Those Hollywood Bloopers!
Character: Self (archive footage)
MOVIE • 1982

That's Entertainment, Part II
Character: (archive footage)
MOVIE • 1976

Hooray for Hollywood
Character: Self (archive footage)
MOVIE • 1976

Brother, Can You Spare a Dime?
Character: Self (archive footage)
MOVIE • 1975

Hollywood: The Dream Factory
Character: Self (archive footage)
MOVIE • 1972

The Movie Orgy
Character: Self (archive footage)
MOVIE • 1968

The Big Parade of Comedy
Character: One of The Marx Brothers (archive footage) (uncredited)
MOVIE • 1964
Got It Made
Character:
MOVIE • 1961

The DuPont Show with June Allyson
Character: Benson
TV • 1959
Crew