I then sent to Louisville for the letters which had preceded this, and receiving the same, I now had the writing of two of them in my possession, and I had managed in a business way to possess myself of sundry documents written by each of these men, and I found other parties, too, who could identify the handwriting of each; and having secured these, I advertised in a Philadelphia paper, also in a Boston paper, in one at Utica, and one in Cincinnati, to the effect that any person by the name of King (that for Philadelphia), or any person by the name of Lord (for Boston), and so on, might hear of something to his advantage by calling on so and so any time during the week. I made arrangements with brother detectives in these places to receive their calls, and instructed them what to say. In this way I became, in the course of two weeks, in possession of abundant facts to convince the firm of Lord, King, & Graham that we had them trapped; and one day, taking an officer along with me, and setting watch till I saw that the two men I have spoken of were in their office, dropped in, and said, "Gentlemen, I have been here often on business affairs, and we have got along very pleasantly, and I have invariably found your advice good; but I've something now which I fear will puzzle you; perhaps you can help me out. By the way, if you please, as it's private, I'll lock the door," stepping towards it. "O, certainly, certainly," said both of them at once. I locked the door, and putting the key in my pocket, said, "Perhaps, gentlemen, you think I am over-cautious in pocketing the key; but my business is serious, and--you are my prisoners." There was astonishment, and differing shades of color going and coming on their cheeks.