WW1 photo of American soldier wearing gas mask (1918?)

Nice photo of American soldier standing in front of a tent, wearing a gas mask.

Provenance is from photo album of a member of the American 199th Aero Squadron.

Small tear at bottom. Black paper remnants from photo album. Some partial writing on back.

3 ⅜” x 2 ⅜”

(Red text is an electronic watermark that is not physically part of the photo for sale)

199th Aero Squadron

Established:     27 November 1917

AEF: 4 March 1918 – May 1919

Trained as Service support squadron in England

Demobilized: June 1919