Born in 1889 in Ontario, Wilbert Gilroy studied dentistry and in 1911 moved to Winnipeg to take over a practice. He enlisted in Winnipeg in 1914 and was sent to France in 1915 with the Canadian Dental Corps. In 1917 Gilroy had himself attached to the Royal Flying Corps and flew with them during 1917 until wounded in October of that year. He returned to England and then subsequently to Canada where he continued to practice dentistry. The collection consists of 130 letters written from 1911 to 1917.