“Joint Operations Graphic (Ground)”. “DMA Stock No. 1501XNI4112”. “Magnetic variation for 1965 is 2 ½ (40 Mils) ; easterly over the entire area”. “Prepared under the direction of the Defense Intelligence Agency and published by Army Map Service, Corps of Engineers. U.S. Army, Washington, D.C. compiled in 1968 from best available source materials”. “Distribution limited-destroy when no longer needed”.