John Winthrop (1714-1779) American physicist, mathematician and astronomer. In 1740 he observed a transit of Mercury. Engraving, 1896.

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Keywords: 1714-1779, 1740, 1896., american, archival, archive, astronomer., astronomy, engraving, historical, history, john, mathematician, mercury., observed, physicist, scientist, transit, usa, winthrop