Directions for the use of anti-aircraft artillery instruments. Pamphlets Instrument flying techniques and procedures, January 1951 tm Instrument lights M19, M31, M34, M35, M37, M38, M47, 6578454 and 7983714, 1955 Air navigation attack computer : part no. FAA-160B ; FSN 6605-435-1481 (Felsenthal Instruments) 22040
