Thoreau gives a presentation to the Boston Society of Natural History (Proceedings of the Boston Society of Natural History for 1856-59).
Ticknor & Fields writes to Thoreau:
Dear Sir,
In our last account we credited you capl [cash?] on the balance of copies of Walden, including quite a number of copies then on hand unsold—as the Edition was so nearly out we paid for all at that time. We have never been out of the book but there is very little demand for it so the 16 cops. rqd were in the edition printed. We enclose ck $11 [16? 18?] .25 for 15 cops Concord River sold leaving in our hands 17 cops.
Truly yours
W. D. Ticknor & Co.