"DEAR SIR:--I have examined with care your Isometrical Drawing of the Gettysburg Battle-field, and can cheerfully bear testimony to the accuracy of the position of the troops on the right of our line. "Yours very truly, "H. W. SLOCUM, "_Maj.-Gen. Vols., Comd'g Right Wing at Gettysburg._" [Illustration: WOFFORD'S FLANK ATTACK ON SWEITZER'S BRIGADE, DEATH OF COL. JEFFERS 4th MICH. VOLS.] HISTORY OF THE BATTLE. During my consultations with officers at the front, as well as on the Battle-field, I noted down with great care their conversations, and have books full of material thus rescued from oblivion. [Illustration: STANNARD'S BRIGADE OPENING ON PICKETTS' DIVISION.] Since the publication of the Drawing, and even before, I have been steadily engaged in compiling the History of the Battle of Gettysburg. I have traveled many thousand miles to add to my knowledge. I have received a great number of letters relating to it, and the Government have very considerately placed at my disposal the entire Reports of both the Union and Confederate officers; and have also given me access to the archives at Washington. They have recently ordered a re-survey of the field, which is now being done by Government Engineers in the most complete and scientific manner. A fine Topographical map is to be compiled and engraved, copies of which I have arranged to have to illustrate my History of the Battle. This book, in addition to the maps, which will cost several thousand dollars, will also be illustrated with Steel Plates and Wood-Cuts in a manner second to no book heretofore published in this country. Over $7,500 worth of illustrations are already engraved to embellish it, including fine Steel Portraits, executed by the best engravers in America, in line and stipple, of Generals Reynolds, Doubleday, Newton, Meredith, Stannard, Hancock, Gibbon, Zook, Hays, Webb, Hall, Sickles, Birney, Humphreys, Berdan, Sykes, Barnes, Tilton, Wright, Bartlett, Wheaton, Howard, Ames, Slocum, Williams, Geary, Kane, Pleasanton, Butterfield, Warren, Hunt, Ingalls, Randolph, Martin, and McGilvrey. Several others are in hand, and undoubtedly more will be added to the list. In addition to these the Portraits of leading Confederate Generals will be engraved. Many of the prominent scenes of the battle have already been beautifully designed and engraved on wood, samples of which embellish this circular, others are to be added, and to those interested I shall be pleased to furnish full information regarding either portraits or wood-cuts. * * * * * I shall publish a POPULAR EDITION of the history, with portraits printed from transfers, and bound in cloth. Price. $7.50 * * * * * The next will be the LIBRARY EDITION, royal octavo, printed on good fair paper, good plates, and substantially bound in sheep. $12.00 * * * * *