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Norbert Aping, Das Dick und Doof Buch, Marburg 2004

Richard W. Bann, Leonard Maltin, Die Kleinen Strolche, Berlin 1995

Rainer Dick, Laurel & Hardy, München 1995

William K. Everson, The Complete Films of Laurel & Hardy, New York 1991

Gene Fernett, American Film Studios, Jefferson 1988

Rolf Giesen, Lachbomben, München 1991

Douglas Gomery, The Hollywood Studio System, London 1986

Clive Hirschhorn, The Universal Story, London 1983

Clive Hirschhorn, The Hollywood Musical, London 1981

Wolfgang Jacobsen, Hans Helmut Prinzler, Hal Roach, Berlin 1992

Blair Miller, American Silent Film Comedies, Jefferson 1955

allmovie.com

ancestry.com

angelfire.com

deutsches-filminstitut.de

ellisislandrecords.org

familysearch.org

findagrave.com

4alfalfa.com

hollywoodland.org

imdb.com

laurel-and-hardy.com

laurelandhardycentral.com

picking.com

rootsweb.com

silentsaregolden.com

wikipedia.com

Special thanks to Robert Edwards, Los Angeles