The Principal Roads and Waterways of 1840 are identified by solid and broken lines. Shows canals, primary roads, and secondary roads. Features the area between the Mississippi River and the Atlantic Ocean. These United States History maps, now available from Universal Map, are a valuable visual aid in understanding American History. All maps in this series are markable with a dry erase or water-soluble marker. Durably laminated maps measure 46 x 32 or 36 x 48. Mounted on roller with backboard. Meets U.S. History curriculum requirements.These maps are a new special order item. Please allow 2-4 weeks for delivery on multiple wall map custom sets. This product is ideal for public, private, parochial, and home schools.