Book excerpt: This study of early sound shorts begins with an explanation of the development of sound motion pictures in Hollywood by such influential companies as Warner Bros. and Fox, with an emphasis on short subjects, leading up to the first few months when all of the major studios were capable of producing them. The next chapters discuss the impact on other mass entertainments, the development of audible news reels and other non-fiction shorts, as well as the origins of animated sound subjects. A comprehensive list of pre-1932 American-made shorts completes the volume.