1John F. Dumoulin to Thomas Jefferson, 12 April 1816 (Jefferson Papers)
Monticello (TJ’s estate); Visitors to; Dumoulin, John F. [index entry]
2Thomas Jefferson to John F. Dumoulin, 7 May 1816 (Jefferson Papers)
Monticello (TJ’s estate); Visitors to; Dumoulin, John F. [index entry]