Has anyone ever heard of a WW II artist / Illustrator by the name of Robert Helmick. The drawings I have list him as the artist / illustrator in the 1940's. Both pencil sketches are of airial dogfights between American and German or British and German Aircraft. They are unsigned. All I have is a placard that came with the drawings. Drawing size is approx. 15" X 20" tablet paper. Very fine detail and quality. Thanks for any help or info provided.