Flown double-sided schematic for the Lunar Roving Vehicle carried on the lunar surface during the Apollo 16 mission, 10 x 8, signed and flight-certified in blue felt tip, "This lunar rover schematic was carried aboard our lunar rover by John Young and myself during our drives across the lunar surface: April 21-23, 1972. Charles M. Duke, Jr., LMP." Printed on heavy cardstock, the page features three punch holes to its top edge for storage in the Lunar Surface Maps Book. One side shows an electrical power diagram from the batteries to the drive control, with the reverse showing the rover's communication circuits. In fine condition.
Accompanied by a letter of provenance signed by Duke, in part: "This is to certify that the accompanying Lunar Rover (LRV) Schematic from the Lunar Surface Maps Book was carried on the lunar rover while we drove the Moon during our EVA traverses in Descartes Highland…While on the Moon, John Young and I drove the lunar rover during our exploration. We had a LM Lunar Surface Maps book…in order to navigate across the valley's surface. The maps, as well as this LRV schematic, were contained in the book which was carried on the lunar surface. This 'LRV' schematic spent approximately 20 hours and 14 minutes on the lunar surface…It was kept under my (Lunar Module Pilot's) seat during our EVA traverses across the lunar surface…We kept this schematic on board the rover during our lunar travels, since it was key to the lunar surface mission. In the event of a system or electric motor failure during one of our EVAs, we would have reviewed the schematic to attempt to repair the rover…This Lunar Rover Schematic has been in my personal collection for forty years since it was presented to me after my return to Earth in 1972."
