Plate No. VI - Blistering of buttocks by mustard gas
Medical Research Committee of the Chemical Warfare Medical Committee with sanction of Director-General A. M. S. and the Controller of the Chemical Warfare Department, Ministry of Munitions
<a rel="nofollow" class="external free" href="https://archive.org/details/atlasofgaspoison00greauoft/page/n3/mode/2up">https://archive.org/details/atlasofgaspoison00greauoft/page/n3/mode/2up</a> - An Atlas of Gas Poisoning, 1918