WW I poster USA World War I, American recruitment poster showing soldier holding wrench and waving to airplane in flight; includes list of occupations available, such as chauffeurs, wood workers, auto mechanics, photographers, and motorcyclists, "and men from 40 other trades". Original title: Over there! Skilled workers On the ground behind the lines - In the Air Service. Skilled workers registered in the draft, or under 40 years of age can still join the Aviation Section, Signal Corps, U.S. Army. Artist: Louis Fancher (1884 - 1944) Lithograph poster, color; Ketterlinus. Philadelphia 1917.