Park at night document - Love-watching in the dark. Stiff wrappers in dust jacket. Black-and-white photos interspersed with text. The original Document Koen is one of the most notorious and collectible photo books from Japan. This follow-up paperback features photos from the first section of the book with text and diagrams. This small volume, published a year after the original, is a D.I.Y. of sorts for aspiring photo-voyeurs aiming to produce the sort of images seen in Document Park.