Hitchcock on Griffith
Sid Gottlieb discusses Hitchcock's essay on D.W. Griffith, "A Columbus of the Screen" (reprinted in the Hitchcock Annual 14 from the original February 21, 1921 issue of Film Weekly.
Gottlieb, Sidney. "Hitchcock on Griffith." Hitchcock Annual 14 (2005-2006): 32-45.