1From Thomas Jefferson to Benjamin Waterhouse, 25 December 1800 (Jefferson Papers)
I recieved last night, and have read with great satisfaction your pamphlet on the subject of the kine-pox, and pray you to accept [my] thanks for the communication of it. I had before attended to your publications on the subject in the newspapers, and took much interest in the result of the experiments you were making. every friend of humanity must look with pleasure on this discovery, by...
2From John Adams to Benjamin Waterhouse, 10 September 1800 (Adams Papers)
I have received and will communicate to the American Academy of Arts and Sciences, your Prospect of exterminating the Small Pox. I have read this History of the Kine Pox with pleasure. Your Zeal and Industry to give these Experiments fair play in America deserve the thanks of all the Friends of science and Humanity. To disarm the Small Pox of its contagion is an enterprize worthy of a Hercules...