Cassette Special Communication System- An Experimental System for Communication with Hard-To-Reach People

Cassette Special Communication System- An Experimental System for Communication with Hard-To-Reach People, Box: 42, Folder: 22. Cornell University Cooperative Extension records, 21-24-1975. Division of Rare and Manuscript Collections. https://archives.library.cornell.edu/repositories/2/archival_objects/152110 Accessed February 04, 2026.