^The Complete Encyclopedia of Popular Music and Jazz, 1900–1950, four volumes, by Roger Davis Kinkle (1916–2000), New Rochelle: Arlington House Publishers, 1974 (Steward's bio is in Vol 3) OCLC897890
^The Encyclopedia of Popular Music; Third edition, eight volumes. Edited by Colin Larkin, London: Muze, 1998 Grove's Dictionaries, New York, 1998