1To Thomas Jefferson from George Skene Keith, 1 July 1791 (Jefferson Papers)
“Keith hall,” Scotland, 1 July 1791 . He is sending “a small publication” which he hopes TJ will accept, concerning “an universal Equalization of Weights Measures and Coins. And if I thought any man in America had bestowed more Labour on this than I have done I should not have given you this trouble.” As for TJ’s proposed rod pendulum vibrating seconds as the standard, he surely knows that...