Medical Research Committee, Government Document, January 1919

"Reports of the Chemical Warfare Medical Committee"; "No. 18 -- Report on the Medical Aspect of the Production of Mustard Gas"; "Fig. 2 - Discoloration of the skin over the back, buttocks, thighs and behind the knee-joints", "Fig. 3 - Discoloration of the skin over the neck, chest and arms with blistering", "Fig. 4 - Extensive blistering of the skin over the buttocks and arms". These numbered illustrations are inserted in the report between pp. 8-9.