1. Letter from W. H. Crichton to D. Gordon Cheyne Publication: Produced: 23 December 1943 Subject(s): Typhus, Epidemic Louse-BorneAttitude of Health PersonnelOrganization and Administration Archival Collection: The Fred L. Soper Papers (Profiles in Science)
2. Letter from W. H. Crichton to D. Gordon Cheyne Publication: Produced: 24 December 1943 Subject(s): Typhus, Epidemic Louse-BorneAttitude of Health PersonnelOrganization and Administration Archival Collection: The Fred L. Soper Papers (Profiles in Science)
3. Excerpt from Fred Soper's diary Publication: Produced: [2-28 December 1920] Subject(s): Attitude of Health Personnel Archival Collection: The Fred L. Soper Papers (Profiles in Science)
4. The physician and the people Author(s): Landes, Leonard, 1870- author Publication: [New York?] : American Association of Independent Physicians, 1924 Subject(s): Attitude of Health PersonnelEthics, MedicalPractice Patterns, Physicians'
