Many of Watson's works are still on display at his old house, which he and his sister had transformed into a small art gallery. Homer Watson's letters, his unpublished manuscripts, and his paintings, drawings, and prints document the issues that most interested him as an artist. Of his concerns, the commemoration of southern Ontario's pioneers and early settlers and the visual expression of Canadian regional and national identities locate Watson firmly within the milieu of many of his fellow artists of the time. In addition to these priorities, his dedication to safeguarding the natural environment was exceptional and far-sighted.