Report of Investigation Division by Neal R. Smith (SCAP, Legal Section), dated March 17th, 1947; on the location and authenticity of the Harbin Secret Laboratory and responsible persons named.
Report of Investigation Division by Ernest H. Powell (SCAP, Legal Section), dated February 25th, 1947; on the name of the former commanding officer at Harbin Experimental Section being unknown.
Report of Investigation Division by Mr. Roy T. Yoshida (SCAP, Legal Section), dated February 6th, 1947; on Hiroshi Ukki not being localisable at the address given during the reference report.