Hypersonic: The Story of the North American X-15

Dennis R. Jenkins is a consulting engineer in Cape Canaveral, Florida, working on various aerospace projects including 20 years on the Space Shuttle and several on the stillborn X-33 program. He is the author of Space Shuttle: The History of the National Space Transportation System - The First 100 Missions in addition to more than 30 other works on aerospace history. Tony Landis was born and raised in southern California and joined the Air Force right out of high school. He has a life-long interest in aerospace history and images from his photo collection have been published in hundreds of publications.