rare all original oversized salvaged chicago public school world map featuring railroad, steamship, and airway routes

exceptional all original vintage american salvaged chicago school oversized world wall map executed by the a.j. nystrom company, chicago, ills. the nicely worn and weathered map is one of several maps salvaged from an old chicago public school. the map features steamship routes, airways, railroads, and carvan routes. the map was edited by v.c. finch, professor of geography at university of wisconsin.