1To James Madison from Andrew Ellicott, 20 February 1802 (Madison Papers)
At the request of Mr. Delambre one of the Secretaries of the National Institute of France; I want to forward to him some observations on the eclipses of Jupiters satellites to compare with his new Tables, which he is anxious to publish soon; but is at the same time desirous to make them as perfect as possible. As this exchange of Astronomical observations is of importance to a useful branch of...