**Stefan Knapp (1921–1996)** was a Polish painter and sculptor who spent much of his career in Britain, renowned for his monumental public murals and innovative enamel-on-steel technique that he patented for architectural applications. Born in Biłgoraj, Poland, on 11 July 1921, Knapp began studies at the Lwów Polytechnic before World War II interrupted his life. Arrested by Soviet forces, he endured a Siberian gulag, where he crafted makeshift art from scavenged materials. Released in 1942 under the Sikorski-Mayski Agreement, he joined the Polish forces, trained as a Spitfire pilot in the Royal Air Force, and later settled in London.

After the war, Knapp pursued formal training at the Royal Academy and the Slade School of Fine Art on a veteran’s stipend. His early experiences fueled a therapeutic series of works titled *Gulag* in the late 1940s, marked by experimental techniques. By the mid-1950s he gained acclaim for large-scale murals created by melting glass onto steel using custom furnaces. He shifted increasingly toward enamel and sculpture, producing durable public commissions meant to endure for millennia. Notable examples include multiple murals for Heathrow Airport (later reinstalled), a foyer mural at Hallfield Primary School in Westminster (early 1950s), the *Battle of Britain* mural for the Warsaw metro, and a vast 280-panel work for Alexander’s department store in Paramus, New Jersey (1963), once the world’s largest mural.

Knapp exhibited regularly from 1954 onward across Europe and beyond, received honors including the Virtuti Militari and the Churchill Fellowship (used for mural studies in several countries), and authored the autobiography *The Square Sun* about his gulag experiences. He also created synagogue decorations drawing on childhood memories and an astronomy-themed installation at Nicolaus Copernicus University in Toruń. He died in London on 12 October 1996 while still active in his studio.

Knapp’s legacy endures through his pioneering fusion of fine art and architecture, his resilient spirit reflected in vast, luminous public works, and ongoing exhibitions of his murals and smaller paintings. His technical innovations and dramatic life story continue to inspire appreciation for art’s capacity to transcend adversity and transform public spaces.

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Knapp

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