The Crime of
Poison Gas
in Warfare

When the United States Congress declared war on Imperial Germany in April of 1917, the New York pamphleteer Halsey William Wilson (1868 – 1954) wasted little time in collecting a list of the numerous war crimes committed by the Germans up to that time in order to launch a mass printing of a 31 page pamphlet that would sell for five cents each. The heinous use of poison gas was listed on page nine.