Philadelphia: Ketterlinus, 1917. Original poster. Color lithograph. 30 x 20 inches. This eye-catching poster features a bald eagle framed in a royal blue background. From its nest below, warplanes pour from hangars, flying towards the viewer. Charles Livingston Bull (1874-1932) was a wildlife illustrator from Rochester, New York, who produced a number of animal-themed posters during WWI. Good condition. Minor tear at bottom edge. Minor foxing. Small piece missing lower right margin not affecting image.