This big ARROW MAP of the CALUMET AREA was a give-away from Hoosier State Bank Hammond Indiana, and it is old enough to still have a listed phone number that used the old alphabet prefix's, in this case WE (phone WE1-1212). 

I honestly believe that my wife and I were the very first to unfold this map, however one little corner was "glued" to the folder and it got minorly damaged despite our best efforts. 

Un-folded, you can see how big the map is. My clever wife (holding up the map in a pic) was able to fold the map back exactly as it should be. It's a good thing that I didn't try. 

Anyway, thanks and enjoy. I hope someone out there wants to show off this neat old map.