John Adams, Charles Francis Adams (1851). “The Works of John Adams, Second President of the United States: With a Life of the Author, Notes and Illustrations”, p.421
George Washington, Jared Sparks (1835). “The Writings of George Washington: Being His Correspondence, Addresses, Messages, and Other Papers, Official and Private”, p.159
John Adams, Abigail Adams, Thomas Jefferson (1971). “The Adams-Jefferson letters: the complete correspondence between Thomas Jefferson and Abigail and John Adams”, Touchstone
George Washington, John Clement Fitzpatrick, David Maydole Matteson (1792). “The Writings of George Washington from the Original Manuscript Sources, 1745-1799”
Thomas Jefferson (2011). “Jefferson on Freedom: Wisdom, Advice, and Hints on Freedom, Democracy, and the American Way”, p.39, Skyhorse Publishing, Inc.
Benjamin Franklin (1905). “The Life of Benjamin Franklin: Written by Himself. Now First Edited from Original Manuscripts and from His Printed Correspondence and Other Writings”
Abigail Adams, John Adams, L. H. Butterfield, Marc Friedlaender, Mary-Jo Kline (1975). “The Book of Abigail and John: Selected Letters of the Adams Family, 1762-1784”, p.95, UPNE