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You searched for: “Patterson, Robert; and perpetual-motion machine”
Results 1-3 of 3 sorted by date (ascending)
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No. Author Recipient Title Date Context
1 Patterson, Robert Jefferson, Thomas Robert Patterson to Thomas Jefferson, 30 November 1812 1812-11-30 Patterson, Robert; and perpetual-motion machine [index entry] 
2 Jefferson, Thomas Patterson, Robert Thomas Jefferson to Robert Patterson, 27 December 1812 1812-12-27 Patterson, Robert; and perpetual-motion machine [index entry] 
3 Patterson, Robert Jefferson, Thomas Robert Patterson to Thomas Jefferson, 12 January 1813 1813-01-12 Patterson, Robert; and perpetual-motion machine [index entry]