William John Heaslip (1898-1970) left his native Toronto, Canada after serving the Royal Flying Corps during WWI and made his home in New York. He was a painter, lithographer, and illustrator. His fondness for aeronautics carried into his work. He completed a series of advertising posters for the Coca-Cola Company featuring United States Army aircraft in 1943 that are currently housed at the Smithsonian Air and Space Museum. He passed away in 1970 in Morristown, New Jersey.

Resources Cited:
National Air and Space Museum, Smithsonian Institution
http://www.nasm.si.edu/collections/cons.cfm?id=6628

Ask Art
http://www.askart.com/askart/h/william_john_heaslip/william_john_heaslip.aspx