It was in the little office of James T. Fields, over the bookstore of Ticknor & Fields, at 124 Tremont Street, Boston, that I first met my friend of now forty-four years, Samuel L. Clemens. Mr. Fields was then the editor of The Atlantic Monthly, and I was his proud and glad assistant, with a pretty free hand as to manuscripts, and an unmanacled command of the book-notices at the end of the magazine.