You are looking at an old school pull down map, that is 68" X 55" by the maker of Nystrom. First layer is of World and second layer is of the U.S. (Nystrom - May vary.) Nystrom makes maps for the teaching of social studies and to help students understand their world and relationship with others. #69 #70, #71,
72, #73, #74 (Projection Screen) , #75, 
All maps that have the title "Pull Down Map" is equipped with an original spring loaded mechanism that works as it should and allows the map to be pulled down and then retracts back up much like a roller shade window blind. If the map has the title description "Cloth Map" it will come equipped with a wooden dowel at the bottom and top of the map and does not retract because it is not equipped with a spring loaded mechanism.  If you should still have any questions please feel free to ask.  Thank you