Warner Bros financial information in The William Schaefer Ledger. See Appendix 1, Historical Journal of Film, Radio and Television, (1995) 15:sup1, 1-31 p 25 doi:10.1080/01439689508604551
Neumeyer 2004. Neumeyer, David (Spring 2004). "Merging Genres in the 1940s: The Musical and the Dramatic Feature Film". American Music. 22 (1): 129. doi:10.2307/3592971. JSTOR3592971.
Glancy 1995, p. 64. Glancy, H. Mark (1995). "Warner Bros Film Grosses, 1921–51: the William Schaefer ledger". Historical Journal of Film, Radio and Television. 15 (1): 64. doi:10.1080/01439689500260031.
Neumeyer 2004. Neumeyer, David (Spring 2004). "Merging Genres in the 1940s: The Musical and the Dramatic Feature Film". American Music. 22 (1): 129. doi:10.2307/3592971. JSTOR3592971.