1To Thomas Jefferson from William Hay, 2 December 1790 (Jefferson Papers)
A Difference of Opinion having arisen between Doctr. Currie and me respecting the Encyclopedie...
2To Thomas Jefferson from William Hay, 18 February 1791 (Jefferson Papers)
Your Determination respecting the Encyclopédie in which Mr. Madison concurs with you, is...
3To Thomas Jefferson from William Hay, 3 January 1792 (Jefferson Papers)
Altho’ I am fully sensible that your Office of Secretary of State employs your whole Attention,...