1Thomas Jefferson to Henry Dearborn, 7 October 1815 (Jefferson Papers)
I ask the favor of you when at Boston to engage for me fourteen tons of plaister of Paris to be...
2Thomas Jefferson’s Notes on a Conversation with Henry Dearborn, 7 October 1815 (Jefferson Papers)
1815. Oct. 7. Gen l Dearborne informs me that the plaister of Paris is brought from the head of...