Well, after contacting Schmap and advising them of their error, I received a reply:
Thanks for taking the time to point out this error - it's
really appreciated. I'll make sure your photo doesn't
proceed to our final selection phase.
For our future guides the best way for us to find your
photos is to have them on Flickr with correct tags.
So, are they accusing me of having my photos improperly tagged? Personally, I would think a Louisiana highway sign would be a big clue that the photo isn't from St. Louis, but I suppose I could be wrong.