[CIVIL WAR]. BROOKE–RAWLE, William (1843–1915). The Right Flank at Gettysburg: An Account of the Operations of General Gregg’s Cavalry Command… Philadelphia: Allen, Lane & Scott’s Printing House, 1878. 8vo. Folding map. Original printed wrappers (upper cover corner clipped, some edge wear, few stains or soiling to covers). FIRST SEPARATE EDITION with additional notes, first issued a month prior in the Philadelphia Weekly Times, 14 September 1878, as “Chapters of unwritten history in the annals of the war”. Brooke–Rawle was part of the Third Pennsylvania Cavalry during the Civil War under the command of General David McMurtrie Gregg (1833–1916). Under Gregg’s command, the 8th Pennsylvania Cavalry earned distinction by defending the right flank of the Union line, defeating J.E.B. Stuart’s efforts on the third day of the battle, winning “one of the most conspicuous cavalry victories of the war”. Not in Sabin or Howes.