To learn more about the history of the university, there are a number of online resources that can be explored, including the following:
:: The Carolina Story: A Virtual Museum of the University
-- Medical and Health Education:: The First Century of the First State University
-- Public Service and Professional Schools at Carolina
-- Teachers, Scholars, and Citizens: Distinguished Carolina Faculty
-- Names Across the Landscape
:: This Day in the History of the University of North Carolina
:: Virtual Tour of the University
History of the Health Sciences Library and Health Affairs Schools
:: UNC Gillings School of Global Public Health: Meeting the Public Health Challenges of the 21st Century
In addition, here a few selected publications that deal with various aspects of the history of Health Affairs at UNC:
:: Bettering the Health of the People: W. Reece Berryhill, the UNC School of Medicine, and the North Carolina Good Health Movement / by William W. McLendon, Floyd W. Denny Jr., William B. Blythe 
:: Norma Berryhill Lectures: 1985-1999 / The School of Medicine, the University of North Carolina at Chapel Hill ; edited by William W. McLendon, William B. Blythe, Floyd W. Denny, Jr. ; volume two, containing lectures from 2000-2008, has recently been published.
:: Medical Education at Chapel Hill / by W. Reece Berryhill ... [et al.] 
:: Memories & Reflections: Academic Medicine, 1936-2000 / John B. Graham 
:: The School of Pharmacy of the University of North Carolina: A History / by Alice Noble 
:: Dreaming of a Time: The School of Public Health: The University of North Carolina at Chapel Hill, 1939-1989 / by Robert Rodgers Korstad 
:: The University of North Carolina School of Public Health Relates to the Needs of a Changing Society: A Selective and Interpretive Account with Emphasis on the Decade of the Sixties / by William Fred Mayes 
Lastly, the HSL Special Collections web site features a variety of guides to research materials such as archival collections, digital collections, oral histories, etc. concerning the history of Health Affairs and the university as a whole. The library's online catalog also provides subject access to hundreds of resources on university history.
Note: The image above is from the Photographic Archives of the North Carolina Collection. It is a pen and ink sketch by John Pettigrew and depicts Old East circa 1797.