Contains Engels' correspondence, lectures, notes, reports, and clippings. Materials range in date from 1943 to 1975, with the bulk of material undated.
Contains the personal and professional papers of Frank Libman Engel (1913-1963), chair of the Division of Endocrinology at Duke University School of Medicine from 1960 to 1963. Types of materials include personal and professional correspondence, grant materials, articles, photographs, reports, lectures, notes, yearbooks, and clippings. Materials range in date from 1934 to 1990.
Contains reprints of articles written by Engel, articles by other authors, clippings, and correspondence. Some of the articles are written in German and Russian. Materials range in date from 1934 to 1966.