As an artist based in New York, Hasen drew inspiration from his own experience working with maps as a military technician during World War II. Hasen studied at the Art Students League, at the school of the painter Hans Hofmann and, for two years after the war, in Paris on the G.I. Bill. During the war he served in the Air Force in the Pacific, where his duties involved close study of aerial maps, an activity that lastingly influenced his work. Hasen’s first solo show was at Galerie 8 in Paris in 1950. His first New York show was at the Hacker Gallery in 1952. He was later represented by Anita Shapolsky and had his last show in New York at the Hugo de Pagano Gallery in 1997. Hasen taught at the School of Visual Arts from 1954 until his retirement in 2000.
