Thoreau writes in his journal:
Left Concord, Wednesday morning, September 25th, 1850, for Quebec. Fare $7.00 to and fro (Journal, 2:73).
Thoreau writes in A Yankee in Canada:
I left Concord, Massachusetts, Wednesday morning September 25th, 1850, for Quebec. Fare, seven dollars there and back; distance from Boston five hundred and ten miles . . . We left Concord at twenty minutes before eight in the morning, and were in Burlington about six at night, but too late to see the lake.