Two ALSs, signed "O. W. Holmes" and "Oliver Wendell Holmes," both one page, approximately 4.25 x 7, dated July 23, 1866, and October 23, 1883. The earlier letter, in full: "I do not expect to lecture out of Boston this winter and am consequently obliged to decline your polite invitation." The second letter, in full: "Please accept my thanks for your positive thoughts during your visit to Mount Auburn. I remember your call very pleasantly and am glad that you enjoyed it." In overall very good to fine condition, with a rough right edge, and split fold, to the later letter.