H. D. Thoreau, The Maine Woods, "The Allegash and East Branch," §4; Sarah Orne Jewett, A Country Doctor, ch. 19A

Episode 31 continues with Thoreau's third adventure in the Maine woods, during which he interests himself in his Indian guide's sensibilities regarding how to conduct oneself on a Sunday; the episode concludes with the first half of A Country Doctor's 19th chapter, in which the young Dunsport lawyer recognizes ponders the degree to which his affection for Nan is reciprocated.