Hart --

You may be interested in this earlier post about Washington Confederate Cemetery:

http://history-sites.com/mb/cw/gacwmb/index.cgi?noframes;read=3516

Here's a website mentioning the Hagerstown Cemetery as well as two others nearby:

http://www.nps.gov/anti/cemetary.htm

From General Toombs' report:

Among the casualties of the day I have to deplore the loss of two commanders of regiments. Colonel Millican, of the Fifteenth Georgia, who greatly distinguished himself both at Manassas and in this action for personal gallantry and efficiency as a soldier and field officer, fell while gallantly leading his regiment in the final charge (and nearly its close), which swept the enemy from this part of the field of battle.

The Smith farm mentioned was located near Keedysville, Md., and not in Virginia. Three images by Alexander Gardner show the farm immediately after the battle. Here's one:

http://www.mdgorman.com/Photographs/Gardner/590.htm