1From James Madison to William Billings, 9 May 1801 (Madison Papers)
Letter not found. 9 May 1801. Acknowledged in Billings to JM, 21 May 1801 . Queries Billings on...
2From James Madison to William Billings (Abstract), 12 March 1805 (Madison Papers)
12 March 1805, Department of State . “In answer to the letter in which you make certain enquiries...