Thoreau writes in his journal:
Thoreau also writes to William E. Sheldon:
Thinking it possible that you might be expecting me [to] lecture before your Society on the 5th of December as I offered—I write to ask if it is so.
I am still at liberty for that evening—and will read you a lecture either on the Wild or on Moosehunting as you may prefer.
Yrs respectfully
There is no record of a lecture on 12/5 and Thoreau’s journal entry for that day suggests that he remained in Concord.