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Description
Featured on page 120 of Electronics in the West with this caption: "John M. Kaar with the amplifier of one of his first products, a machine to make phonograph records built for Menlo School, Menlo Park, 1936."
Type
image
Format
Black & White
Identifier
2B8AAE35-579F-4AD8-B36A-005016244976 2003-35-391
Subject
Phonograph records (LCSH) Phonograph--History (LCSH) Amplifiers (Electronics) (LCSH) Amplifiers, Vacuum-tube (LCSH) Kaar, John M
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