I have a painting which was WWII souvenir of my father''s. It is done on Whatman drawing board(14X26) image size is 9X26. The scene is one of a soldier passing a written message to a radio operator as another soldier with M-1 Garand looks on. My father was in the south Pacific and the painting appears to be a jungle scene. It is signed in the upper right corner - J KARL. Is anyone familiar with work by this artist?