Light and Lens Photography in the Digital Age By Robert Hirsch ISBN: 978-0-240-80855-0 ISBN10: 0-240-80855-X Exploring Color Photography 4th edition By Robert Hirsch ISBN: 0072407069 Seizing the Light: A History of Photography By Robert Hirsch ISBN: 0697143619 Photographic Possibilities: The Expressive Use of Ideas, Materials, and Processes 2nd edition By Robert Hirsch, John Valentino ISBN:0240803620