Photo #: 165-C-702 City Class armored gunboats Under construction by James Eads, at St. Louis, Missouri, prior to October 1861. This view looks along the main deck on one gunboat, with its boilers in the foreground and casemate timbers at the sides. Another vessel is beyond, with some spar deck beams atop the casemate side timbers and upright framing in place for her wheel box. The four ships of this class built at St. Louis were Carondelet, Louisville, Pittsburg and Saint Louis. Note flagpole in the left background. Photograph from the Collections of the U.S. National Archives.