21. [A man and a woman wearing headsets] Publication: [197-?] Subject(s): African AmericansNational Library of Medicine (U.S.). Reference Services Division.
22. [Watching a video tape in the AV area] Publication: [197-?] Subject(s): Catalogs, LibraryNational Library of Medicine (U.S.). Reference Services Division.
23. Audiovisual learning resource area Publication: 1977 Subject(s): Libraries, MedicalNational Library of Medicine (U.S.). Reference Services Division.
24. [Audiovisual learning resource] Publication: 1977 Subject(s): Libraries, MedicalNational Library of Medicine (U.S.). Reference Services Division.
25. [Classification listing in the AV area] Publication: 1977 Subject(s): Libraries, MedicalNational Library of Medicine (U.S.). Reference Services Division.
26. [Patron using microfiche] Publication: [197-?] Subject(s): Catalogs, LibraryNational Library of Medicine (U.S.). Reference Services Division.
27. Audio-visual carrel Publication: [197-?] Subject(s): National Library of Medicine (U.S.). Reference Services Division.
28. [Dr. Sherrington in the audiovisual carrel] Publication: [197-?] Subject(s): National Library of Medicine (U.S.). Reference Services Division.
29. [Maxine Hanke in the RSD/PSD stacks] Publication: [196-?] Subject(s): Library MaterialsNational Library of Medicine (U.S.). Reference Services Division.
30. [Stacks in RSD/PSD] Publication: [196-?] Subject(s): Library MaterialsNational Library of Medicine (U.S.). Reference Services Division.