90. EXCELSIOR BRIGADE AT GETTYBURG JOHN S. AUSTIN Union Colonel who commanded the 72nd N.Y. "Excelsior Brigade" at Gettysburg, where the regiment fought with great distinction and suffered heavy losses. Scarce war-date D.S. 2pp. Legal folio, Falmouth, Va., May 28, 1863 to Col. Wm. R. Brewster who was then commanding the brigade, a list of thirteen men he seeks to have promoted. Very good. $150 - 200