Apollo 15 Official colour NASA lithograph of the Apollo 15 crew posing in their white space suits with the lunar rover, inscribed in black felt tip "To John Hammon, with best wishes of the Apollo 15 crew, November 1971" and signed by Dave Scott, Al Worden and Jim Irwin, reverse bears NASA caption text, 10 x 8"; typed letter to John Hammond, signed by the members of Apollo 15 crew and reading "we wish to express grateful thanks for your efforts in making our visit to London such a pleasant and rewarding experience. We are most mindful of the work involved in the preparations for such visits and we appreciate all that you did for us", one page, some creasing, 8vo , National Aeronautics and Space Administration, Washington, 10 November 1971 (2) ***Both items come with COA issued by Garry King