Reports numbered 'Porton Report No. 2309, Serial Nos. 15, 17, 18'. Compiled by Mr. G.E. Patrick in collaboration with Dr. D.J. Thomas and Mr. L.C. Thomas. Contains six monochrome photographs of gas masks, reference numbers B.1568, B.1569, B.4703, B.4704, B.3853A and B.3854A. Drawings: P.1043.A, German Container, Type 1; P.1229.A, German Container Type 2; P.1272.A, German Container Type 3; P.1403.A, German Container Type 7. Stamped 'Secret'.
1 folder (3 copies)