Brief Biography-Thomas Wilmer Dewing from Boston studied in the Museum School of Fine Arts and played the violin as an interest. He worked as a portraitist and lithographer before going to Paris to enter the Académie Julian for three years. There he was tutored by Jules Lefebvre and Gustave Boulanger. Tonalism describes his work style, but mainly of women rather than landscape painting, which was the typical subject in tonalism. He also did murals; his most noted one was in the Detroit Savings Bank.
He married the successful artist Maria Oakey Dewing and settled in Long Island while teaching at the Art Students League of New York. He later taught at the National Academy of Design in New York and joined the group of Ten American Painters. Amongst them were John Twachtman and Childe Hassam, whose painting Avenue in the Rain hangs in the Oval Office. Dewing was the only painter not regarded as an impressionist in the group. Nevertheless, the wealthy collector Charles Lang Freer bought many of his works and engaged him in purchasing his collection.
In Cornish, New Hampshire, he died eleven years after his wife Maria died in New York.