The Battle of Antietam, Septr. 16th-17th, 1862.
In this detail from a printed map, Sneden shows the movement of the Lee's Confederate line at the battle of Antietam. On September 16 the Confederates are shown east of Sharpsburg. On September 17, after a day of intense fighting, the Confederates have pulled back slightly to just outside the town of Sharpsburg. On September 18 they are shown moving toward Shepherdstown, W. Va.