This fortress protected Mobile. From a famous series of views by McPherson & Oliver, this has their 1864 Copyright, their imprint, and a blue 2-cent Playing Card stamp with their initials. "Sally Port" is written in pen above the view but I'm not clear about this. The sally port may possibly be the brick structure on the right, but it doesn't look like the rectangular entrance shown in "The End of an Era" p. 112 (from another image by McPherson & Oliver.) A wagon is at left.
