1. Correspondence between Alfred Blalock and Robert S. Litwak, 1955 Collection: Horace Gilbert Smithy, Jr., M.D. Papers Institution: Waring Historical Library (MUSC)
2. Correspondence between Alfred Blalock and M. J. Canavan, January 1950 Collection: Horace Gilbert Smithy, Jr., M.D. Papers Institution: Waring Historical Library (MUSC)