Became U.S. citizen at age 31.
Biography in: John Wakeman, editor. "World Film Directors, Volume One, 1890-1945." Pages 251-257. New York: The H.W. Wilson Company, 1987.
Blacklisted in 1950s; one of the Hollywood Ten.
Father of son Richard and daughters Victoria and Rebecca with Jean Porter.
He directed six different performers in Oscar-nominated performances: Robert Ryan, Gloria Grahame, Tom Tully, Humphrey Bogart, Katy Jurado and Elizabeth Taylor.
Last name properly pronounced "Dah-METT-trick."
Later renounced and denounced Communism.
Profiled in "Film Noir Reader 3" by Robert Porfirio (Limelight Editions). 
Was originally (in 1954) assigned to direct 20th Century Fox's Seven Cities of Gold (1955), but eventually Robert D. Webb directed the picture.