Warhol habitually used the expedient of tracing photographs projected with an epidiascope. Using prints by Edward Wallowitch, his 'first boyfriend' the photographs would undergo a subtle transformation during Warhol's often cursory tracing of contours and hatching of shadows. Warhol used Wallowitch's photograph "Young Man Smoking a Cigarette" (c.1956), for a 1958 design for a book cover he submitted to Simon and Schuster for the Walter Ross pulp novel "The Immortal", and later used others for his dollar bill series, and for "Big Campbell's Soup Can with Can Opener (Vegetable)", of 1962 which initiated Warhol's most sustained motif, the soup can.