At the close of the sixth volume of this work, some imperfect acknowledgment was made to those from whom I have received most essential service while making my collection of materials. I shall hereafter have occasion to recur to that subject; at this time I desire to express my sense of the friendly regard of many persons in various parts of our country, who have sent me unpublished documents, or historical pamphlets and monographs, such as the liberal and inquisitive are constantly producing. Whatever can be obtained in the ordinary way through the booksellers, I have no need to solicit; but I am and shall ever be grateful to any person who will forward to me at New York any materials which cannot be obtained except through private courtesy.
