Test Instruments, 1950s, Box: 2, Folder: 27-30. Joseph J. Greenbaum papers, NS-02-02-04. The New School Archives.
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Test Instruments, 1950s, Box: 2, Folder: 27-30. Joseph J. Greenbaum papers, NS-02-02-04. The New School Archives. https://findingaids.archives.newschool.edu/repositories/3/archival_objects/20484 Accessed August 25, 2025.