1. Letter from Fred L. Soper to Joseph E. Smadel Publication: Produced: 25 June 1961 Subject(s): PakistanCholeraOrganization and Administration Archival Collection: The Fred L. Soper Papers (Profiles in Science)
2. Letter from Fred L. Soper to Joseph E. Smadel Publication: Produced: 2 February 1962 Subject(s): Organization and Administration Archival Collection: The Fred L. Soper Papers (Profiles in Science)