Eric Hearle was born in 1893 and enlisted in Hamilton, Ontario in September, 1914 with the 4th Battalion. As a result of wounds received in France he returned to Canada and studied at the University of Guelph. Following his studies Hearle became an assistant entomologist with the federal government. The collection consists of thirteen letters and twelve postcards. It also contains more than 130 photographs, beginning in 1914 with the camps in Canada and England and including a series from convalescent hospitals in Canada. Hearle died in 1934 at the age of 41.