 "Text Book of Surgical Pathology" (1932) was co-authored with Bruce M. Dick, and went through twelve editions by 1979.The other textbook, "Short Text Book of Surgery" (1938) reached a ninth edition by 1972.In the three years before the outbreak of the Second World War, Illingworth held the position of Conservator of the Museum of the Royal College of Surgeons of Edinburgh (1936–1939).