Desirable 6 x 4 American flag carried to the lunar surface on the Apollo 17 mission, as attested to in a TLS signed by Apollo 17 crewmen Gene Cernan and Ron Evans, one page, 5.25 x 8, NASA letterhead, December 11, 1975. Addressed to NASA protocol officer Edward Barker, the letter reads: "This flag of our nation flew to the moon aboard the spaceships 'America' and 'Challenger,' Apollo XVII, December 6-19, 1972. Let it be to you as it is to me, a symbol of the ambition, effort, and self-sacrifice of a people dedicated to the greatest nation in the history of the world. Please accept this flag with the price the heritage of our country so righteously deserves." In fine condition. Accompanied by a letter of provenance from Barker: “Given to me by Gene Cernan — Personal kit — Apollo 17. In his suit while on the moon.” Augmented by rock-solid astronaut-certified provenance, this is a beautiful and patriotic flown artifact from the final Apollo moon-landing mission.