1. Letter from Virginia Apgar to Allen O. Whipple Creator: Apgar, Virginia Date: 29 November 1937 Genre: Letters (correspondence)
2. Letter from Virginia Apgar to Karl A. Connell Creator: Apgar, Virginia Date: 21 March 1939 Genre: Letters (correspondence)
3. Letter from Karl A. Connell to Virginia Apgar Creator: Connell ApparatusConnell, Karl A. Date: 9 March 1939 Genre: Letters (correspondence)
4. Letter from Virginia Apgar to F. W. Clement Creator: Apgar, Virginia Date: 25 April 1938 Genre: Letters (correspondence)
5. Letter from F. W. Clement to Virginia Apgar Creator: Clement, F. W. Date: 28 March 1938 Genre: Letters (correspondence)
6. Letter from Allen O. Whipple to Virginia Apgar Creator: Whipple, Allen O. Date: 5 April 1939 Genre: Letters (correspondence)
7. Letter from Karl A. Connell to Virginia Apgar Creator: Connell ApparatusConnell, Karl A. Date: [ca. 9 April 1939] Genre: Letters (correspondence)
8. Letter from Virginia Apgar to Allen O. Whipple Creator: Apgar, Virginia Date: 25 September 1939 Genre: Letters (correspondence)
10. Letter from Ralph M. Waters to Virginia Apgar Creator: Waters, Ralph M.The University of Wisconsin. State of Wisconsin General Hospital Date: 6 January 1939 Genre: Letters (correspondence)