Tony LandisBooksAmerican X-Vehicles : An Inventory - X-1 to X-50American X-VehiclesX-15 photo scrapbookLockheed Blackbird family photo scrapbookF-117 Nighthawk Stealth Fighter, an Illustrated Developmental HistoryLockheed AH-56A CheyenneU.S. Air Force jet fighter prototypesAuthor data: Open Library