Observations of the Transit of Venus Over the Sun, June 3, 1769. In a Letter to the Reverend Nevil Maskelyne, F. R. S. Astronomer Royal, from John Winthrop, Esquire, F. R. S. Hollisian Professor of Mathematics at Cambridge, in New England

Observations of the Transit of Venus Over the Sun, June 3, 1769. In a Letter to the Reverend Nevil Maskelyne, F. R. S. Astronomer Royal, from John Winthrop, Esquire, F. R. S. Hollisian Professor of Mathematics at Cambridge, in New England. Winthrop, J Philosophical Transactions (1683-1775). 1769-01-01. 59:351–358