There is absolutely no reason to believe that they wouldn't be able to provide a state-by-state listing in 1860. From that it takes only a little simple math to calculate the total in southern banks etc. Thus your post is a nonargument.
And you're sticking up for whathisname. What a hoot.
He put CAPS on "Union" and "Southern". The only reasonable interpretation is that somewhere in some musty old nook in the national archives, there's a book titled "U.S. Department of the Treasury (1860)" with the headers:
"Union"
And:
"Southern"
That's what whatshisname said. It's absurd. But you support it.
Walt
Both words are being used formally. It would be grammatically incorrect NOT to capitalize them. Face it, Walt. You are grasping at straws with this one.