1To Thomas Jefferson from William & Samuel Jones, 9 March 1793 (Jefferson Papers)
We had the pleasure of receiving yours of the 26th. of Decr. Ulto. and have accordingly sent herewith, one of the best kind of our Portable Orreries . The price of the one sent is 3 Guineas, the additional half guinea is on account of its having a stand, and the plates under the earth and moon more durable, and not so liable to be loose dirty, and useless after a little while as those made of...