Invention Room 
Invention Room details
Invention Room details
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Dynamic Accentor
Dynamic Accentor
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1-Aug-1956 article on Dynamic Accentor
1-Aug-1956 article on Dynamic Accentor
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1912 Hammond was a US Delegate to the Int'l Telegraphic Conf in London
1912 Hammond was a US Delegate to the Int'l Telegraphic Conf in London
Viewed: 1840 times.

Alexander Graham Bell and John Hays Hammond Jr.
Alexander Graham Bell and John Hays Hammond Jr.
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Castle lobby area was lab and business office
Castle lobby area was lab and business office
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Dr. Hammond at his office desk
Dr. Hammond at his office desk
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Hammond on the stairs in the Great Hall
Hammond on the stairs in the Great Hall
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Hammond watching his pipe organ being manufactured
Hammond watching his pipe organ being manufactured
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