Biography
John Joseph Haley Jr. (August 10, 1897 – June 6, 1979) was an American actor, comedian, dancer, radio host, singer and vaudevillian. He was best known for his portrayal of the Tin Man and his farmhand counterpart Hickory in the 1939 Metro-Goldwyn-Mayer film The Wizard of Oz. Description above from the Wikipedia article Jeff Imada, licensed under CC-BY-SA, full list of contributors on Wikipedia.
Known For

The Wizard of Oz
"Hickory" / Tin Man

New York, New York
Master of Ceremonies (uncredited)

That's Entertainment!
(archive footage)

Alexander's Ragtime Band
Davey Lane

Pick a Star
Joe Jenkins

Rebecca of Sunnybrook Far...
Orville Smithers

Beyond the Blue Horizon
Squidge Sullivan

Navy Blues
'Powerhouse' Bolton

Rat Pack
Self (archive footage)

Take It Big
Jack North