Part I. Preliminary Survey of the Aft Facing Seated Position_, Air
Force Technical Report 5915, (Wright Patterson AFB, OH: Wright Air Development Center, 1949) and Maj. John P. Stapp, _Part II. The Aft Facing Position and the Development of a Crash Harness_, Air Force Technical Report 5915 (Wright Patterson AFB, OH: Wright Air Development Center, 1951).