- Sigmund RombergWilliam A. Everett · New Haven, CT: Yale University Press, 2007 · ISBN: 0300111835
- Deep in My Heart: A Story Based on the Life of Sigmund RombergElliott Arnold · New York: Duell, Sloan and Pearce, 1949
- Deep in My Heart (1954)
- New York Times (US)"Romberg Left $428,167 [wife is principal beneficiary]"January 16, 1957 · pg. 36:3
- Variety (US)"Sigmund Romberg, Last of Operetta Triumvirate, Dies Suddenly in N.Y. at 64"November 14, 1951
- The Times (GB)"Sigmund Romberg"November 12, 1951 · pg. 6:5
- New York Times (US)"Sigmund Romberg, Composer, Dies, 64; Victim of Stroke in His Suite at Ritz Towers--Came Here From Coast a Week Ago; Writer of 78 Musicals; 'The Student Prince,' 'Blossom Time' Among Successes--Produced 2,000 Songs"November 10, 1951 · pg. 17:1
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