1Thomas Jefferson to William DuVal, 20 April 1813 (Jefferson Papers)
I have occasion for the agency of a friend in the neighborhood of Shelbyville Kentucky , in a case which gives me considerable trouble and inquietude; and I do not know that I have either a friend or acquaintance in that neighborhood. I have learnt however that you have a son there, a practitioner of law, and I have believed that from our acquaintance and friendship, of now half a century, I...