↑"Dr. Donald Hooker Dies In Baltimore". The Morning Herald. Vol.L, no.180. Hagerstown, Maryland. Associated Press. August 3, 1946. p.14. Retrieved January 19, 2019– via Newspapers.com.
↑"Hopkins Professor Going To Chicago U."The Evening Sun. Baltimore, Maryland: The A.S. Abell Company. December 20, 1935. p.37. Retrieved January 19, 2019– via Newspapers.com.
↑"Medical Group Honors Garrey". The Nashville Tennessean. Vol.32, no.608. Tennessean Newspapers. April 5, 1938. p.3. Retrieved January 19, 2019– via Newspapers.com.