tm Instrument lights M19, M31, M34, M35, M37, M38, M47, 6578454 and 7983714, 1955 annual reports / war department Annual report of the Chief of Engineers U.S. Army annual reports / war department Report of the Chief of Engineers U.S. Army Courses in U.S. army schools for the school year ... - USA Voorschrift Pamphlet No. 20-21
