My Greek history professor used to have an old map like that with the attached rods and the tattered edges, but it was a map of the Mediterranean. He would teach off of that in the age of powerpoint and computers, which I thought was kinda cool. Very nice find.
I have a pair and I believe they run fairly true to size for me. In other words, I usually wear a 9.5 D and a 9.5 D was the right fit for me with these. The toe box is roomy, however, so don't be surprised of you have a bit of extra room up front.