Robert Heinecken. Lessons in Posing Subjects/Matching Facial Expressions. 1981. Fifteen internal dye-diffusion transfer prints (SX-70 Polaroid) and lithographic text, mounted on Rives BFK paper. 15 × 20" (38.1 × 50.8 cm) overall. Collection UCLA Grunwald Center for Graphic Art, Hammer Museum, Los Angeles. Gift of Dean Valentine and Amy Adelson. © 2013 The Robert Heinecken Trust