1To James Madison from Samuel Stanhope Smith, 26 March 1789 (Madison Papers)
The bearer Mr Jno. Churchman believes he has made a discovery of some consequence for readily ascertaining the longitude. He wishes his principles to be examined by capable mathematicians in the vicinity, &, if possible, under the direction of Congress. If they should prove as valuable as he supposes, I shall be happy that rude genius in our countryman may meet with proper encouragement. Dr...