51: A WWI U.S. ARMY AIR SERVICE RECRUITMENT POSTER

The WWI lithograph recruiting poster 'Join the Army Air Service, Be an American Eagle!' signed lower left in the image for illustrator Charles Livingston Bull (1874-1932), marked Alpha Litho Co. lower right.
Measures 27 x 20.5 inches.
Very good condition, one minor chip upper left corner, minor edge wrinkles and chip lower left corner.
$400 - $600