51. Mrs. Wright at desk in main reading room Publication: [1963?] Subject(s): Libraries, MedicalLibrariansNational Library of Medicine (U.S.). Reference Services Division.
52. Mrs. Wright taking slips from reader Subject(s): Libraries, MedicalLibrariansNational Library of Medicine (U.S.). Reference Services Division.
53. Multimedia reference resource card catalog Publication: [197-?] Subject(s): Catalogs, LibraryNational Library of Medicine (U.S.). Reference Services Division.
54. [Online terminal in the reading room] Publication: [196-?] Subject(s): LibrariansNational Library of Medicine (U.S.). Reference Services Division.
55. [Patron in the main reading room] Publication: [196-?] Subject(s): Libraries, MedicalNational Library of Medicine (U.S.). Reference Services Division.
56. [Patron using microfiche] Publication: [197-?] Subject(s): Catalogs, LibraryNational Library of Medicine (U.S.). Reference Services Division.
57. [Patrons in the reading room] Publication: [196-?] Subject(s): Libraries, MedicalLibrary MaterialsNational Library of Medicine (U.S.). Reference Services Division.
58. [Pearl Caldwell working with microfilm reels] Author(s): Bredland, Ralph. Publication: [1969?] Subject(s): MicrofilmingAfrican AmericansNational Library of Medicine (U.S.). Reference Services Division.
59. [Placing a book under microfilm camera's glass] Publication: [1969?] Subject(s): MicrofilmingAfrican AmericansNational Library of Medicine (U.S.). Reference Services Division.
60. [RSD/PSD mobile camera in the stack area] Publication: [196-?] Subject(s): MicrofilmingAfrican AmericansNational Library of Medicine (U.S.). Reference Services Division.
