William Cowper, Robert Southey (1854). “The Works of William Cowper: Letters, 1788-1799. Papers in the Connoisseur. Letter from an owl to a bird of paradise. Fragment of an intended commentary on Paradise lost. Account of the treatment of his hares”, p.334
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.80