Not a particularly rare poster (it folds out to a one-sided 22″ x 32″ size) and one that has been slightly damaged on one panel (I’m rather good at finding stuff that is “slightly damaged”) by being in contact with some sort of acidic paper.  It features 29 black-and-white photos of Southern history from 1830 (even one of a geezery-looking Nicholas W. Darrell) through the mid 50s.  Notice there’s no ZIP Code shown.

So, find yourself one of these and “paste these pictures in your railroad scrapbook”.