1Thomas Jefferson to Nathaniel Bowditch, 2 May 1815 (Jefferson Papers)
I thank you, Sir, for your highly scientific pamphlet on the motion of the Pendulum, and more particularly for that containing the deductions of longitudes of places in the United States , from the Solar eclipse of 1811 . that of Monticello is especially acceptable, having too long lost familiarity with such operations to have undertaken it my self. mr Lambert of Washington had also favored me...
2Thomas Jefferson to DeWitt Clinton, 2 May 1815 (Jefferson Papers)
Your favor of Apr. 6. has been duly recieved, with the circular letter it inclosed from the Literary & Philosophical society of New York . the association you propose to me with that respectable body cannot but be honorable to me, altho’ it must excite the regret of consciousness that I should be an unprofitable member. the hand of age has more than begun to press upon me, and with the...