Died: 30 September 1958, Los Angeles, California, USA
Jack was born John Thomas Gargan.
A small part actor who's also appeared on television, especially the Perry Mason series on which he appeared 15 times, mainly as the court clerk, before his untimely death in 1958.
Stage Door (1937) as Dance instructor (uncredited)
Adolph Menjou in the hat.
Slightly Honorable (1939) as Senate spectator (uncredited)
Bernard Nedell and Edward Arnold.
The Falcon's Brother (1942) as the ship's steward (uncredited)
The Falcon Out West (1944) as Nightclub bartender (uncredited)
The Falcon in San Francisco (1945) as Waiter (uncredited)
Dick Tracy (1945) as Cop (uncredited)
Crack-Up (1946) as 2nd railroad ticket agent (uncredited)
Magic Town (1947) as Reporter's assistant (uncredited)
Perry Mason: The Case of the Restless Redhead (1957) (Season 1, Episode 1) as Court clerk