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> At which time I found that method of Infinite series. And in summer 1665 being forced from Cambridge by the Plague I computed the area of the Hyperbola of Boothby in Lincolnshire to two & fifty figures by the same method. [signed] Is. Newton
He made a signed statement of his discovery just as in a 20th century engineer's/inventor's notebook.
The mention of being forced from Cambridge because of the plague makes me wonder if some great discoveries are being made right now because many bright minds have been forced home by coronavirus.