James Lorin Chapin writes in his journal:
I came down to Mr. Thoreau’s to see if H. D. Thoreau would come and lecture before the Lincoln Lyceum next Tuesday evening. He said if nothing occurred more than he expected he would come (Concord Saunterer vol. 17, no. 3 (December 1984), 23; MS, Miscellaneous Journals. Archives/Special Collections, Lincoln (Mass.) Public Library).