1Thomas Jefferson to William F. Gray, 8 November 1818 (Jefferson Papers)
Bowditch, Nathaniel; The New American Practical Navigator [index entry]
2Thomas Jefferson to William F. Gray, 4 April 1819, with Jefferson’s Note (Jefferson Papers)
Bowditch, Nathaniel; The New American Practical Navigator [index entry]
3Enclosure: Thomas Jefferson: Bookbinding Directions for William F. Gray, [ca. 8 November 1818] (Jefferson Papers)
Bowditch, Nathaniel; The New American Practical Navigator [index entry]