Air General Ordnance Bureau of Munitions Ministry, (Koku Heiki Sokyoku) Functions of Iron and Steel Ssction (Tekko Ka) , Serial No. 286. Report No. 2-r, USSBS Index Section 8

Air General Ordnance Bureau of Munitions Ministry, Serial No. 286. Report No. 2-f(23), USSBS Index Section 8

Air General Ordnance Bureau of Munitions Ministry, (Kokuheikisokyoku), Serial No. 286. Report No. 2-t, USSBS Index Section 8

Intelligence memoranda-material relative to higher authorities in Japan: Report on organization of the Air Ordnance Bureau of the Japanese Ministry of Munitions. Report No. 53a(50)(d), USSBS Index Section 2