Vintage 1960's Bell Telephone Degraded Speech Synthesis Educational Tool Kit

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"This is a Vintage 1960's Bell Telephone Degraded Speech Synthesis Educational Tool Kit. The Case contains all items in the photos. Every thing you see is included.
Everything appears to be in mint condition. I don't know anything about these items and have no way to test them. Some items appear to be unused.

Kit includes all items in photos:
1 - Bell Telephone Laboratories Degraded Speech Circuit Board.
1 - Bell Telephone Laboratories Artificial Larynx Circuit Board.
2 - Bell Systems Labs Electronic Speech Synthesis Science Experiment #3, Dated 1963.
1 - Bell Telephone Laboratories “The Speech Chain” Book
3 - 1963 Computer Speech 33-1/3 RPM Record vintage with original sleeves: songs include: GREETINGS, BASIC EXAMPLES, AN HISTORICAL REMARK, HAMLET solilquy, BICYCLE BUILT FOR TWO unaccompanied, BICYCLE BUILT FOR TWO accompanied, COMPUTER DUPLICATES HUMAN VOICE, GOODBYE.
1 - Stack of various speech pamphlets.
1 - Speech Tape Cartridge.
1 - Control box.
1 - Lot of wires and speakers.
1 - Storage case."