Printmaker and painter. Known especially for semi-abstract, expressionistic landscapes, he also produced portraits and other figural subjects. Born in Karlsruhe, Germany, he studied art in Geneva and Paris before spending two years in Belgium. After moving to New York in 1938, he studied printmaking at the Art Students League. In the 1940s he worked with Stanley William Hayter at Atelier 17, then took over direction of the workshop when Hayter left the country in 1950. During his early years in New York, his work sometimes reflected the prevailing American Scene interest in reporting on contemporary American life. His etching and aquatint Madonna of the Subway (1939) depicts a sweet young woman and her child, surrounded by the urban throng. Later, in both prints and paintings, he deployed energetic forms and lines to create exuberant landscapes, often specifically related to Maine where he summered for more than forty years on Deer Isle. As in First Sunlight After Rain, No. 2 (1955), an etching, he employed color, often in brilliant tones, as a major expressive element. Schrag taught at Cooper Union from 1954 to 1968. He died at his home in Manhattan.