Geraldine Norman, "Art Works of the 1960s Break Auction Records," London Times , 7 May 1974, p. 16
David Shirey, "Arts Market," Arts Magazine , vol. 48, June 1974, p. 75. illustrated
Carl Weinhardt Jr., Robert Indiana , New York 1990, p. 55, illustrated in color
Emmanuel Bénézit, Dictionnaire critique et documentaire des peintres. sculpteurs, dessinateurs et graveurs de tous les temps et des tous les pays par un groupe d"écrivains spécialistes français et étrangers , vol. 7, Paris 1999, p. 342
Exh. Cat., Portland Museum of Art; Marietta Cobb Museum of Art, Love and the American Dream: The Art of Robert Indiana , June 1999 - January 2000, pp. 21, 27
Susan Elizabeth Ryan, Robert Indiana: Figures of Speech , New Haven 2000, pp. 81, 92, 101, 268, 277
Allison Unruh, ed., Robert Indiana: New Perspectives , Ostfildern 2012, p. 120
Exh. Cat., West Bretton, Yorkshire Sculpture Park, Robert Indiana: Sculpture 1958-2018 , March 2022 - April 2023, p. 39
Simon Salama-Caro, Robert Indiana Catalogue Raisonné, digital , ongoing, no. P-1961-5, illustrated in color (online)