Northern Arizona Space Training (Loose Leaf) (ISBN-13: 9781467126946)

Kevin Schindler is the historian at Lowell Observatory, where he has worked for 21 years. He regularly contributes articles about science and history to a variety of publications and writes a regular column, The View from Mars Hill, for the Arizona Daily Sun. William Sheehan is a psychiatrist by profession and an independent scholar of the history of astronomy. Recognized worldwide as an authority in this field, he writes extensively for various magazines and journals and has authored more than a dozen highly acclaimed books.