Appealing color first edition of the Apollo 10 Lunar Orbit Chart for the mission's 1st and 30th revolutions, 41 x 12, dated April 10, 1969, displaying areas in darkness and earthshine, lunar sunset terminator lines for the 1st and 30th revolutions, and a wide assortment of lunar landmarks and regions. Titled in the lower right corner, "Apollo Lunar Orbit Chart (ALO), Apollo Mission 10, 1st and 30th Revolutions, 18 May 1969 Launch Date." Lithographed by ACIC 4-69, and prepared under the direction of the Department of Defense by the Aeronautical Chart and Information Center. Rolled and in very good to fine condition, with overall waviness and slight chipping to edges. From the Don Eyles Apollo Computer Collection.