“I, first of all, was simply struck by the fact that he [Marsden Hartley] used numbers and letters just as I did. And particularly the numbers . . . I could see well there was definitely a connection between us. . . . Now his way of painting and how they look are enormously different from my own approach so that I have simply transformed Hartley’s paintings as I might have done them myself. Not as he would have done them.”
— Robert Indiana
Excerpt from Susan Elizabeth Ryan, Ph. D. Interview with Robert Indiana. July 19, 1991. Robert Indiana: Figures of Speech Archive, 1987–2005.