John Everett of the SS Sardinian (Allan Line) in 1918. The original is in the Beaverbrook Collection of War Art, Canadian War Museum (CWM 19710261-0141).
From the Daily Kennebuc Journal (Augusta ME), 10 July 1918, p. 8—
Webber, a sign writer, who for the past two and a half years has made
his home in this city, enlisted Tuesday at the local naval recruiting
station in the aviation section of the US Naval Reserves as a
camoufleur, and will take his final examination today at Portland. If he
is successful in the examination he will leave soon for Mineola, Long
Island, for a two-months course of training. Mr. Webber is the first
young man from this section if not from the entire state to enroll in
the naval reserves as a camouflage artist.