The Hopkins four: Osler, Halsted, Welch, and Kelly
National Institutes of Health (U.S.)
[Bethesda, Md.] : U.S. Dept. of Health, Education, and Welfare, Public Health Service, National Institutes of Health, 
Osler, William, Sir, 1849-1919.
Halsted, William, 1852-1922.
Welch, William Henry, 1850-1934.
Kelly, Howard A. (Howard Atwood), 1858-1943.
National Library of Medicine (U.S.)
See catalog record: 101582523
NLM Permanence Rating: Permanent: Stable content