League of New York. There he also briefly assisted painter John F. Sloan, known as one of the Ashcan School. Dombrovsky soon attracted attention for his art. In 1925 he relocated to Baltimore with his third wife, artist Elinor Gibson, whom he met at the Art Students League. They had a son David Graham. The son later married Patricia Thompson, and died in Windermere, Florida. He had gone to Europe to retrieve the remainder of his fathers work on John Graham’s death. Patricia Thompson Graham later gave numerous works by his father to the Museum of Modern Art in New York. Other of Graham's relatively small collection of remaining works are in her sisters Kathryn and Jean's portfolios. While in Baltimore, Graham joined a group called The Modernists. He served as their secretary and exhibited in their gallery. In this period, in addition to painting, Graham established himself as an art connoisseur and collector. He most notably established a collection of African art for Vanity Fair editor Frank Crowninshield. Graham himself also collected traditional African art, and eventually developed part of his studio at 57 Greenwich Avenue into what he called the Primitive Arts Gallery. He was greatly interested in developing knowledge of advances and changes in the art world, and kept in touch with what was taking place in Europe as well as the US. Beginning in the 1930s, Graham became associated with the New York School as an artist and impresario. In that decade, he was painting in the abstract, post-cubist style of Pablo Picasso, who exerted wide leadership from Paris. Graham was a close friend with artists Wilhelmina Weber Furlong and her husband Thomas Furlong of the Art Students League. Graham and Elinor Gibson were divorced in 1934, and she kept custody of their son David. That year Graham met American Constance Wellman in Paris; they married in New York City in 1936 and lived in Brooklyn Heights. They were near other artists Adolph Gottlieb, David Smith, and Dorothy Dehner. Wellman was instrumental in editing Graham's book System and Dialectics of Art, which he published in 1937. Graham and Wellman worked for Hilla Rebay in 1938, helping her execute the first exhibition of the Museum of Non-Objective Painting, which later developed to become the Solomon R. Guggenheim Museum. Along with many others, Graham and his wife struggled financially during the Great Depression. They moved to Mexico for