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Development of deaf communities in New England like Martha's Vineyard, Henniker and the Sandy River Valley (dec 6, 1800 – dec 6, 1900)
Added to timeline:
The Evolution of Sign Language
By
David Heineman
5 Nov 2017
0
0
624
Date:
dec 6, 1800
dec 6, 1900
~ 100 years
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