Book excerpt: Iconic and never-before-published works by Georgia O'Keeffe, Louise Bourgeois, Judy Chicago, Tracey Emin, Jenny Holzer, Marlene Dumas and Alice Neel run alongside original essays by New York Times best selling authors Erica Jong and Roxane Gay, and contributions from photographers like Cindy Sherman, Carrie Mae Weems, Marilyn Minter and Nan Goldin, as well as by emerging talent such as Mickalene Thomas, Martine Gutierrez and Harley Weir in this groundbreaking art book that sees the most critical female voices of the last century explore the idea of pleasure -- and empowerment -- in all its forms.