Stefan Knapp (1921-1996) was a Polish artist known for his vivid enamel murals. He was also the first artist to experiment with enamel on steel, especially on a large scale. Born in southeast Poland, he was imprisoned and sent to a labor camp in Siberia and later served as a Royal Air Fighter Spitfire pilot.These experiences had a deep impact on his artistic development, and his1940s Gulag painting series illustrate his experimentation with different techniques and materials to express his feelings. He later attended the Central School of Arts & Crafts and the Slade. He went on to create a series of 17 murals for Heathrow Airport and continued to adapt and perfect his enameling methods.