David Brainerd (1822). “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”, p.63
John Gibson Paton (1907). “John G. Paton, missionary to the New Hebrides: An autobiography edited by his brother. New and complete illustrated edition: 1824-1907”