1John Griffiths to Thomas Jefferson, 13 August 1821 (Jefferson Papers)
On the 16 th of last April I took the liberty to write to you respecting the remains of a Welch colony in America . I am aware that it was presumption in me to trouble one of your rank in Society, but I hope and trust I have not given offence. As I have not had the good fortune to hear any news of my Letter, I must conclude either that it has not reached you, or that you have not deemed it...