George Catlin (1857). “Illustrations of the Manners, Customs, and Condition of the North American Indians: With Letters and Notes Written During Eight Years of Travel and Adventure Among the Wildest and Most Remarkable Tribes Now Existing ; with 360 Engravings, from the Author's Original Paintings”, p.16
Massachusetts Historical Society, John Adams, Samuel Adams, James Warren (1917). “Warren-Adams Letters: Being Chiefly a Correspondence Among John Adams, Samuel Adams, and James Warren ... 1743-1814”
"Memoirs of the Rev. David Brainerd: Missionary to the Indians on the Borders of New-York, New-Jersey, and Pennsylvania: Chiefly Taken from His Own Diary".