1Thomas Jefferson to Jacob Alrichs, 10 August 1812 (Jefferson Papers)
Alrichs & Dixon (Wilmington, Del., firm); and carding machine [index entry]
2Thomas Jefferson to Alrichs & Dixon, 30 August 1812 (Jefferson Papers)
Alrichs & Dixon (Wilmington, Del., firm); and carding machine [index entry]
3Thomas Jefferson to Alrichs & Dixon, 22 September 1812 (Jefferson Papers)
Alrichs & Dixon (Wilmington, Del., firm); and carding machine [index entry]
4Thomas Jefferson to James Ronaldson, 12 January 1813 (Jefferson Papers)
Alrichs & Dixon (Wilmington, Del., firm); and carding machine [index entry]
5Thomas Jefferson to Alrichs & Dixon, 14 January 1813 (Jefferson Papers)
Alrichs & Dixon (Wilmington, Del., firm); and carding machine [index entry]
6Thomas Jefferson to Alrichs & Dixon, 26 February 1813 (Jefferson Papers)
Alrichs & Dixon (Wilmington, Del., firm); and carding machine [index entry]
7Thomas Jefferson to Patrick Gibson, 26 February 1813 (Jefferson Papers)
Alrichs & Dixon (Wilmington, Del., firm); and carding machine [index entry]
8Thomas Jefferson to Alrichs & Dixon, 11 March 1813 (Jefferson Papers)
Alrichs & Dixon (Wilmington, Del., firm); and carding machine [index entry]