1. [A man operating the mobile camera in the RSD/PSD stacks] Author(s): Pruyn, Peter N. Publication: [196-?] Subject(s): Library MaterialsMicrofilmingNational Library of Medicine (U.S.). Reference Services Division.
2. [History of Medicine Division's card catalog] Author(s): Pruyn, Peter N. Publication: [1962] Subject(s): Catalogs, LibraryLibrarians
3. Dr. Blake and Sheila Parker Durling behind desk Author(s): Pruyn, Peter N. Publication: [1962?] Subject(s): Libraries, MedicalLibrarians
