Welcome to the John Henry Twachtman Catalogue Raisonné (JHTCR), By Lisa N. Peters, Ph.D., an open-access resource housed on the website of the Greenwich Historical Society. The catalogue records the work of John Henry Twachtman (1853–1902), an important late nineteenth-century American artist, best known for the Impressionist works he created during the 1890s, when he lived in Greenwich, Connecticut.