Inventors Small archive of material related to John Hays Hammond Jr. including signed letters and a detailed biographical article

by Janet Mabie by John Hays Hammond, Jr., Janet Mabie

$750 · Offered by Kuenzig Books

First edition

Gloucester Massachusetts and others : self published 1928-1935. First Edition. An archive of material related to American Inventor John Hays Hammond, Jr. The archive includes 4 letters to Janet Mabie of Eaton Centre, New Hampshire all from 1935. 2 comment on a Mr. Lear who curiously enough is in the same situation that I am in regard to the Navy and foreign patents. Perhaps we may be able to work together to break

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