Librivox recording of Antietam National Battlefield, Maryland by Frederick Herman Tilberg. Chapter 3 - Part 3: Burnside Takes The Lower Bridge; A.P. Hill Turns The Tide; Retreat From Sharpsburg; The Battle And The Canpaign; The War For The Union Takes On A New Purpose; Clara Barton At Antietam; Antietam National Battlefield And Cemetery; Administration. Read by David Wales.