- Members of Company C, 1st Gas Regiment.
- Photo of Company A of the Hellfire Boys, the 30th Engineers (Gas and Flame), later renamed the 1st Gas Regiment.
- Photo of Stokes mortar show in Oct. 1918 at Chaumont, France.
- Lt. Col. B.C Goss setting off smoke bombs in the Argonne Forest in October 1918.
- An artillery division under gas shell bombardment in October 1918 in Varennes-en-Argonnes, Meuse, France.
- A Stokes mortar battery of Company C, 1st Gas Regiment, loading thermite and phosphorus shells in Le Neufour, Meuse, France in late October 1918.
- Masked squad preparing to disinfect a mustard-filled shell hole at Hanlon Field, the American Expeditionary Forces' experimental field at Chaumont, France. Photo was taken after the Armistice, in December 1918.
- A pile of uniforms removed from men exposed to mustard, taken at Croix de Charmont, France, in late August 1918.
- U.S. Marines learning how to put on gas masks in France in January 1918.
- Medical attendant giving water to a gassed soldier in the 82nd and 89th Division north of Royaumeix, France, in late 1918.
- Soldiers in the 6th Infantry Division advancing through a gas cloud in a practice maneuver in in 1919.
- No-mans-land, the battlefield between the Allied and German lines. Location unknown.
- Photo of Company C tents in the mud in France.