1. Adams, M. L. (2010). From mixed-sex sport to sport for girls: The feminization of figure skating. Sport in History, 30(2), 218–241.
2. Anonymous. (1937, December 29). Sonja Henie’s ice show in Chi[cago] may gross $175,000, but disappoints. Variety, p. 45.
3. Anonymous. (1951, August 29). Sonja Henie who made $10,000,000 with Wirtz exits after 16 years. Variety, p. 2.
4. Anonymous. (1952a, September 17). Button paces ‘Capades’ to N.Y. click; Sonja Henie revue sock in Chicago. Variety, p. 66.
5. Anonymous. (1952b, June 18). Lido, Paris. Variety, p. 52.