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1760-1770
Frankliniana Collection, The Franklin Institute, Inc.
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John Mayhew
1772
University of Pennsylvania Rare Book & Manuscript Library
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1730-1750
Atwater Kent Museum of Philadelphia, The Historical Society of Pennsylvania Collection
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William Savery
1750 -1770
Atwater Kent Museum of Philadelphia, The Historical Society of Pennsylvania Collection
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ca. 1760
John Bartram Association Collection, Bartram's Garden
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late 18th century?
Frankliniana Collection, The Franklin Institute, Inc.
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Charles James
1761-1762
Frankliniana Collection, The Franklin Institute, Inc.
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Instrument: before 1785; case probably early 19th century
Bakken Library and Museum
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1790-1810
Winterthur Museum, Garden and Library
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