51To John Adams from François Adriaan Van der Kemp, 20 September 1817 (Adams Papers)
Having in so long a time not received a word from Quincÿ, although I was freed from all anxiety...
52To John Adams from François Adriaan Van der Kemp, 8 June 1817 (Adams Papers)
Since the 7th of Febr—I did not receive a line from my frend—but having been honoured with two...