Frank Spooner Churchill, M.D., was born in Milton, Massachusetts on 26 August 1864, and died in Boston on 27 February 1946. The most active years of his medical career were spent in Chicago, where he carried on an extensive private practice, but he also worked actively on the improvement of health conditions for all children, and in particular on the relationship between pediatrics and education.

Heinz von Diringshofen (1900-1967) was a pioneer in aviation and space medicine, contributing greatly to the field through his research on the effects of weightlessness on pilots and human tolerance to multiple g-loads. The collection consists largely of materials documenting Diringshofen's laboratory and research activities and of published and unpublished writings by Diringshofen and others.

Small collection of correspondence, photographs, writings, and speeches related to McNinch's military medical corps career and retirement, Veteran's Administration, American Hospital Association service, and the Army Medical Library/National Library of Medicine.