
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.

Harpo Marx
1951
Self
1948
Self
1950
Self
1956
Benson
1959
Narrator
1957
Pinky
1932
Nick
1953
Pinky
1933
Self (archive footage)
1968
Tomasso
1935
Harpo
1931
Stuffy
1937
(archive footage)
1976
Self (archive footage) (uncredited)
1983
Rusty
1946
Wacky
1941
Self (archive footage)
1972
Self (archive footage)
1982
'Rusty' Panello
1940
Harpo
1949
Self
1940
(archive footage)
1982
The Professor
1930
Faker Englund
1938
'Punchy'
1939
Self (archive footage)
1975
Red
1929
Harpo Marx
1943Self - Tribute Montage (archive footage)
1976
Self (archive footage)
2016
Self
1939
One of The Marx Brothers (archive footage) (uncredited)
1964
The Merchant of Wieners
1931
Self
1935
Watson
1921
Sir Isaac Newton
1957
Himself (archive footage)
1987
Self
1940
Self (archive footage)
1986