The Lewellys Franklin Barker Collection spans his entire life. Series include correspondence with friends, colleagues, and family; correspondence relating to Barker's autobiography Time and the Physician; correspondence, lecture notes, and articles (1931-1932) from Barker's trip to Russia; material related to William H. Welch, including speeches, memorabilia, and clippings; Barker's student and postgraduate notebooks; teaching notes; and ephemera. The collection is particularly strong in documenting the early years of the Johns Hopkins Hospital.