1Thomas Jefferson to Eusebio Valli, 9 May 1816 (Jefferson Papers)
I am much indebted to the much esteemed Seignior Botta for furnishing me the occasion of addressing to you my salutations on your arrival in the United states , and of tendering my portion of the obligations all owe you for the dangers you voluntarily encounter to lessen theirs. while we are striving how best to preserve our own health, you immolate yours as the victim of safety for us. the...