The subject was the son of Isaac Greenwood (1702-1745) and Sarah (Clarke) Greenwood. Following his father's interest, he became a mathematical instrument maker in Boston. He was also a dentist and an ivory turner.
Gift of Eliza R. and Mary M. Greenwood
Due to ongoing research, information about this object is subject to change.
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New-York Historical Society
170 Central Park West
at Richard Gilder Way (77th Street)
New York, NY 10024