The E-meter has undergone many changes since it was invented by Volney Mathison, an early collaborator with Hubbard.
In 1935, Mathison was married to Jean Darrell, a music librarian for NBC.
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Volney G. Mathison, also known by the pseudonym Dex Volney (August 13, 1897 – January 3, 1965), was an American chiropractor, writer, and inventor of the E-meter.
Volney | Volney Mathison | Volney, Iowa | Thomas Volney Munson |