U.S.S. Pittsburg - An old photo of a boat in the water

Photograph of an ironclad gunboat with twin stacks and four gun ports visible on port side. There is a smaller vessel behind the Pittsburg. "U. S. Gunboat, 'Pittsburg'" (written below image). "Gunboats # 55 Pittsburg Gift of John and Lewis Eads How" (written on reverse side).
Eads' gunboat built in Carondelet, Missouri. Sister boat of the St. Louis, Louisville, and Carondelet.Title: U.S.S. Pittsburg.