In about 1 minute of looking for alabama map t-shirts on images.google, I found the following
http://www.zazzle.com/alabama_vintag...44407346706706
and
http://www.zazzle.com/alabama_vintag...34547141801545
Which I'm fairly sure is the same "vintage" map, just in monochrome. *But* I certainly would not have been able to tell if I hadn't seen the first image. So as I said, if the school did tell them, then the chapter screwed up *somewhat* significantly, but if not, then I'd let it go.
(somewhat of a lane swerve, I guess the equivalent racism toward asians would involve a rice bowl and chopsticks, no idea what food would be viewed that way for non-hispanic whites)