These are all black and white photographs.

They are presumably part of the material mentioned on p. 2 of the 'Report of the International Scientific Commission for the Investigation of the Facts Concerning Bacterial Warfare in Korea and China (With Appendices)' [Peking, 1952]: 'At the meeting of the Executive Committee of the World Peace Council held at Oslo on the 29th. March, Dr. Kuo Mo-Jo, with the assistance of the Chinese delegates who accompanied him, and in the presence of the Korean representative, Mr. Li Ki-Ien, placed the members of the Committee, and other national delegates, in possession of much information concerning the phenomena in question.' Thus, they should have been taken in January - March 1952.

Joseph Needham's caption on the envelope: WPC original photos.

Photographs taken by: Official Chinese source.

Based on the numbering on the back of the photographs, some would appear to be missing from the Needham Research Institute set.

The location of the photographs is not given, but will all be in north-east China or North Korea.

Also worthy of note is that none of these exact images was used in the Report.