Two charts: a color first edition of the Mercury Orbit Chart (MOC-4), 35.25 x 10.5, dated February 1962, which displays a map of the Earth with an assortment of crisscrossing tracking lines indicating the orbital path of Gordon Cooper’s Faith 7 capsule, lithographed by ACIC 3-63, and prepared under the direction of the Department of Defense by the Aeronautical Chart and Information Center; and a color 32.75 x 8.5 Mercury Orbit Chart (MOC-3) published by USAF and prepared by the Aeronautical Chart and Information Center in December 1961, which shows a map of the Earth with orbit tracking lines identical to those made by John Glenn and Scott Carpenter during their Friendship 7 and Aurora 7 missions. In overall fine, folded condition.