1. The Early Diagnosis of the Acute Abdomen;Cope,1921
2. The Treatment of the Acute Abdomen, Operative and Post-operative;Copes,1926
3. U.S. Census Bureau. 1921, 1939, 1934, 1935,1937, 1938, 1943, 1948, 1948. Statistical abstract of the United States. Washington (DC): U.S. GPO.
4. The worldwide epidemiology of acute appendicitis: an analysis of the Global Health Data Exchange Dataset;Wickramasinghe;World J Surg,2021
5. Notable names in medical illustration: A. Kirkpatrick Maxwell;Elliott;Journal of Audiovisual Media in Medicine,1999