This fonds documents Dommasch's career as a medical and artistic photographer and educator. This photographic material covers a wide range of subject matter, with particular emphasis on medicine, natural history, the Canadian arctic, and grain elevators. Considerable reference material, relating to the history of photography as a science and an art, is also included. In addition, this fonds contains Dommasch's extensive collection of posters, including those used for the exhibition, "Posters Against War and Violence." This fonds contains correspondence, clippings, notes, certificates and awards, photographs, slides, sketches, posters, films and publications documenting the interests and career of Hans Dommasch.