1Thomas Jefferson to Ebenezer Herrick, 20 February 1812 (Jefferson Papers)
Gibson & Jefferson (Richmond firm); and textile machinery acquired by TJ [index entry]
2Thomas Jefferson to Ebenezer Herrick, 9 April 1812 (Jefferson Papers)
Gibson & Jefferson (Richmond firm); and textile machinery acquired by TJ [index entry]
3Thomas Jefferson to Ebenezer Herrick, 16 June 1812 (Jefferson Papers)
Gibson & Jefferson (Richmond firm); and textile machinery acquired by TJ [index entry]