[ Inventors ] Small archive of material related to John Hays Hammond Jr. including signed letters and a detailed biographical article by Janet Mabie
[ 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..... More
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