born Jan. 23, 1916, Kansas City, Mo., U.S.
U.S. photojournalist.
After graduating from college, he became a freelance photographer. In 1946 he joined the staff of Life magazine and covered the Korean War (1950); his photographs depicting the life of the ordinary soldier were published in This Is War! (1951). Resuming his freelance life, in 1956 he met Pablo Picasso , with whom he became fast friends; Duncan later published several photographic essays on Picasso's works, including The Private World of Pablo Picasso (1958) and Picasso's Picassos (1961).