German photographer Hans-Peter Feldmann (born 1941) is a virtuoso taxonomist of contemporary visual culture, whose artists' books collate vernacular found imagery into revelatory historical documents. With Nur f?r Privat (which translates roughly as "for private use only"), Feldmann has created a portrait of the German "swinger scene" of the 1970s and '80s. The book is composed of amateur photographs of women in various degrees of undress,...