There are 77 reported notes on the Galveston National in large sized notes, still a desirable location to have a note from though.
The Kilgore $5 is another story, there have been only 8 recent reported sales, of 9 small sized and get this - only three large sized notes. This note in particular is one you want to have authenticated, but it looks good from the image. Of course it is a discovery note, being that it is so rare.
The information above is taken from the Gengerke census of United States Currency.