Thomas Jefferson was known to have attempted to observe at least four solar eclipses in his lifetime. Morristown NHP houses Jefferson's September 17, 1811 observations in a letter to John Payne Todd (son of Dolley Payne Todd Madison).
Originating chiefly from the bequest of Lloyd W. Smith, these papers constitute one of the most significant collections of Revolutionary War materials in the United States, nearly 17,500 manuscripts, journals, account books, letter books, military orderly books, and printed materials. Virtually every prominent figure of the Revolutionary period is represented.