unique and hard to find original and completely intact american instructional pull-down map or chart depicting the near and far side of the earth's moon. the detailed imagery was adapted from original art based on the united states air force lunar chart. the oversized poster was fabricated by a.j. nystrom & co., chicago, il. a smaller variation was used in the world book atlas prepared by the field enterprise educational corporation. the pull-down map contains a completely intact and fully functional spring-roller. the map is laminated on non-tear vinyl. excellent overall condition. likely dates to the 1960's. measures approximately 67 1/2 x 48 inches.