Hello PD's,
There is a Yahoo group dedicated to the U.S.S. Cairo (a sister ship of the U.S.S. Cincinnati) that has a PDF file of the construction of the "City Class" boats based upon drawings taken from the Cairo. These drawings show every timber, it size, and placement in the ship. Based on these drawings you could make a museum quality model of any of these vessels.
When the 7 vessels of the class were built, they were so identical that the only way the crews could tell the vessels apart was by the color band painted on the smokestacks (solely for the purpose of distinguishing the vessels apart). Even then it wasn't too uncommon for a sailor to end up on the wrong boat!
With that in mind, the only glaring error I can see in that beautiful model of the Cincinnati, is that the pilothouse should be octagonal and not round. I could be wrong, though.
Randy