Amazon.com: Slapstick Encyclopedia (Videobook) (Silent) : Buster Keaton, Charlie Chaplin, Harold Lloyd, Harry Langdon, Mack Sennett, Oliver Hardy, Roscoe 'Fatty' Arbuckle, Stan Laurel, Buster Keaton, Charlie Chaplin, George Jeske, Hal Roach, Leo
Amazon.com: Slapstick Encyclopedia [DVD] : Stan Laurel, Buster Keaton, Oliver Hardy, Roscoe 'Fatty' Arbuckle, Charley Chase, Vivien Oakland, Charles Chaplin, Edna Purviance, Harold Lloyd, Mildred Davis, Mabel Normand, Harry Langdon, Al Christie,