In 1909, Marin held his first one-man exhibition at Alfred Stieglitz's 291 gallery in New York City. He had been introduced to Stieglitz by the photographer Edward Steichen, whom Marin in turn had met through the painter Arthur B. Carles. Marin's association with Stieglitz would last nearly forty years, and Stieglitz's philosophical and financial support would prove essential. From 1909 until his death in 1946, Stieglitz showed Marin's work almost every year in one of his galleries. Marin also participated in the landmark 1913 Armory Show.