Phonofilm is an optical sound-on-film system developed by inventors Lee de Forest and Theodore Case in the early 1920s.

Louis Robert Wolheim was an American actor, of both stage and screen, whose rough physical appearance relegated him to roles mostly of thugs, villains and occasionally a soldier with a heart of gold in the movies, but whose talent allowed him to flourish on stage. His career was mostly contained during the silent era of the film industry, due to his death at the age of 50 in 1931.