Dear Sir, - There are now but few left who were intimately acquainted with Mr. Lincoln. I do not call to mind any one who was so much with him as yourself. You were his partner for years in the practice of law, his confidential friend during the time he was President. I venture to say there is now none living other than yourself in whom he so much confided, and to whom he gave free expression of his feeling towards others, his trials and troubles in conducting his great office. You were with him, I know, more than any other one. I think, in view of all the circumstances and of the growing interest which the rising generation takes in all that he did and said, you ought to take the time, if you can, to commit to writing your recollections of him, his sayings and doings, which were not necessarily committed to writing and made public.