Biography in: John Wakeman, editor. "World Film Directors, Volume One, 1890-1945." Pages 1148-1159. New York: The H.W. Wilson Company, 1987.
Brother of actor George Walsh.
Final resting place: Assumption Catholic Cemetery, Simi Valley, California.
He often repeated Jack Pickford's wisecrack about him: "Your idea of light comedy is to burn down a whorehouse."
Interviewed in Peter Bogdanovich's "Who the Devil Made It: Conversations With Robert Aldrich, George Cukor, Allan Dwan, Howard Hawks, Alfred Hitchcock, Chuck Jones, Fritz Lang, Joseph H. Lewis, Sidney Lumet, Leo McCarey, Otto Preminger, Don Siegel, Josef von Sternberg, Frank Tashlin, Edgar G. Ulmer, Raoul Walsh." NY: Alfred A. Knopf, 1997.
Lost his right eye and lead role on location for In Old Arizona (1928) when a jackrabbit leaped into the windshield of his car.
One of the 36 founders of the Academy of Motion Picture Arts and Sciences (AMPAS).
Was originally slated to direct Adventures of Don Juan (1948), in 1945, however Errol Flynn had a falling-out with him.