12. To Hendrik Calkoen, 5 October 1780 (Adams Papers)
18 July, and 4 (above).
26. To Hendrik Calkoen, 10 October 1780 (Adams Papers)
...in Congress, Since the Declaration of Independancy, on the 4. of July 1776, for a...
311. To Hendrik Calkoen, 17 October 1780 (Adams Papers)
note 413 July
420. To Hendrik Calkoen, 26 October 1780 (Adams Papers)
...There has been no Proposals of Reconciliation made, Since the 4. of July 1776—excepting twice.