Newton shot a number of pictorials for Playboy, including pictorials of Nastassja Kinski and Kristine DeBell.
Original prints of the photographs from his August 1976 pictorial of DeBell, "200 Motels, or How I Spent My Summer Vacation" were sold at auctions of Playboy archives by Bonhams in 2002 for $21,075, and by Christies in December 2003 for $26,290.