Continued.
During the next three weeks, 11,000 men constructed 12 miles of earthen redoubts, powder magazines, and batteries around the city perimeters. A total of 37 forts and redoubts were built. Not all, however, were fully developed.
Only Fort Black in Greenfield was a true fort. Most everything else consisted of redoubts and earthworks.
Construction was completed July 3rd, the day Lee met his defeat at Gettysburg.
The fortifications are now mostly lost to erosion, urbanization, and vegetation. A rough map, known as "Defenses of Pittsburgh" was ordered on July 20, 1863. It shows 17 redoubts, 14 battery sites, and one fort.
Lee is a No-Show. --Old B-Runner