Letter not found. 23 December 1801, Washington. Offered for sale in Parke-Bernet Catalogue No. 484, “The Alexander Biddle Papers” (1943), pt. 2, item 200, which notes that the one-page letter “regards Dr. Rush’s son Richard who desired to visit Europe in the capacity of a private secretary to one of the American Ministers. Informs him that he will place the matter before the President.”