Correspondence and reports relating principally to medical research (tuberculosis, cancer, lymphatic system, pernicious anemia), writings and publications. There is material of note on the following organizations: American Association of Anatomists, American Association of University Women, American Woman's Association, Henry Strong Denison Medical Foundation, John Simon Guggenheim Memorial Foundation (re. fellowships), Hall of Fame for Great Americans, Institute for Advanced Study, Johns Hopkins School of Medicine, Medical Aid to China, Medical Aid to Spain, Naples Table Association (this existed to promote laboratory research by women); National Academy of Sciences, National Tuberculosis Association, Peking Union Medical College, Rockefeller Institute, Ellen Richards Prize (awarded by the Association to Aid Scientific Research by Women), Society for Experimental Biology and Medicine, University in Exile (i.e. New School for Social Research), White House Conference on Child Health and Protection, and the World Center for Women's Archives. There are abstracts and notes of unpublished scientific papers, and also materials for her biography of Franklin Paine Mall, 1934.

This collection is primarily correspondence and also notes on experiments concerning the cytology research of Lewis and his wife, Dr. Margaret Reed Lewis, at Johns Hopkins University, Carnegie Institution of Washington, and finally at the Wistar Institute of Anatomy and Biology in Philadelphia. There is significant material relating to his professional society activity in the American Association of Anatomists (President, 1934-1936) and the International Society for Experimental Cytology.

The Corner collection includes correspondence, biographical and research data, lectures, publications, notebooks and drawings, and also photographs. He was both a scientist, specializing in mammalian reproduction and the female reproduction cycle (being a co-discoverer of the hormone progesterone along with Willard M. Allen), and a medical historian writing both biography and institutional history.