1Felix Pascalis to Thomas Jefferson, 15 December 1819 (Jefferson Papers)
Virginia, University of; Faculty and Curriculum; natural-history specimens for [index entry]
2Thomas Jefferson to Felix Pascalis, 2 January 1820 (Jefferson Papers)
Virginia, University of; Faculty and Curriculum; natural-history specimens for [index entry]
3Constantine S. Rafinesque to Thomas Jefferson, 2 February 1822 (Jefferson Papers)
Virginia, University of; Faculty and Curriculum; natural-history specimens for [index entry]
4Theodosius Hansford to University of Virginia Board of Visitors, 15 March 1822 (Jefferson Papers)
Virginia, University of; Faculty and Curriculum; natural-history specimens for [index entry]
5Thomas Jefferson to Theodosius Hansford, 7 April 1822 (Jefferson Papers)
Virginia, University of; Faculty and Curriculum; natural-history specimens for [index entry]