This edition of Mr. Lincoln's address has been prepared and published by the Young Men's Republican Union of New York, to exemplify its wisdom, truthfulness, and learning. No one who has not actually attempted to verify its details can understand the patient research and historical labor which it embodies. The history of our earlier politics is scattered through numerous journals, statutes, pamphlets, and letters; and these are defective in completeness and accuracy of statement, and in indices and tables of contents. Neither can any one who has not travelled over this precise ground appreciate the accuracy of every trivial detail, or the self-denying impartiality with which Mr. Lincoln has turned from the testimony of "the Fathers," on the general question of slavery, to present the single question which he discusses. From the first line to the last—from his premises to his conclusion, he travels with swift, unerring directness which no logician ever excelled—an argument complete and full, without the affectation of learning, and without the stiffness which usually accompanies dates and details. A single, easy, simple sentence of plain Anglo-Saxon words contains a chapter of history that, in some instances, has taken days of labor to verify and which must have cost the author months of investigation to acquire. And, though the public should justly estimate the labor bestowed on the facts which are stated, they cannot estimate the greater labor involved on those which are omitted—how many pages have been read—how many works examined—what numerous statutes, resolutions, speeches, letters, and biographies have been looked through. Commencing with this address as a political pamphlet, the reader will leave it as an historical work—brief, complete, profound, impartial, truthful—which will survive the time and the occasion that called it forth, and be esteemed hereafter, no less for its intrinsic worth than its unpretending modesty.

NEW YORK, September, 1860.