William Henry Dethlef Koerner: The Painter of Prairie Faith Wilhelm Heinrich Detlev “Big Bill” Körner (November 1878 – August 11, 1938) was a prolific American illustrator and painter whose distinctive style captured the spirit of the American West during its formative years. Born in Germany, he emigrated to Iowa at a young age, establishing himself as a respected artist and teacher who profoundly impacted the visual culture of his ad…