One day it occurred to him to test the accuracy of the biographies he was reading. James A. Garfield was then spoken of for the presidency; Edward wondered whether it was true that the man who was likely to be President of the United States had once been a boy on the tow-path, and with a simple directness characteristic of his Dutch training, wrote to General Garfield, asking whether the boyhood episode was true, and explaining why he asked. Of course any public man, no matter how large his correspondence, is pleased to receive an earnest letter from an information-seeking boy. General Garfield answered warmly and fully. Edward showed the letter to his father, who told the boy that it was valuable and he should keep it. This was a new idea. He followed it further; if one such letter was valuable, how much more valuable would be a hundred! If General Garfield answered him, would not other famous men? Why not begin a collection of autograph letters? Everybody collected something. Edward had collected postage-stamps, and the hobby had, incidentally, helped him wonderfully in his study of geography. Why should not autograph letters from famous persons be of equal service in his struggle for self-education? Not simple autographs--they were meaningless; but actual letters which might tell him something useful. It never occurred to the boy that these men might not answer him. So he took his _Encyclopaedia_--its trustworthiness now established in his mind by General Garfield's letter---and began to study the lives of successful men and women. Then, with boyish frankness, he wrote on some mooted question in one famous person's life; he asked about the date of some important event in another's, not given in the _Encyclopaedia_; or he asked one man why he did this or why some other man did that. Most interesting were, of course, the replies. Thus General Grant sketched on an improvised map the exact spot where General Lee surrendered to him; Longfellow told him how he came to write "Excelsior"; Whittier told the story of "The Barefoot Boy"; Tennyson wrote out a stanza or two of "The Brook," upon condition that Edward would not again use the word "awful," which the poet said "is slang for 'very,'" and "I hate slang." One day the boy received a letter from the Confederate general, Jubal A. Early, giving the real reason why he burned Chambersburg. A friend visiting Edward's father, happening to see the letter, recognized in it a hitherto-missing bit of history, and suggested that it be published in the _New York Tribune_. The letter attracted wide attention and provoked national discussion.