1John Vaughan to Thomas Jefferson, 28 May 1814 (Jefferson Papers)
My particular friend M r Nicholas Biddle , with his Lady , daughter of the late M rs Craig , are travelling to some of the springs in Your State, to reestablish health & tranquility of mind, which had been much affected by their late Domestic afflictions —Should they have the opportunity—I should feel gratified at being the means of bringing you personally acquainted— M r Biddle’s tour to Europe