Letter from Valerie Sorenson, [secretary to Thomas Gold], to Dr George E Mueller, Director, Manned Space Flight Program, National Aeronautics and Space Administration [NASA], Washington DC Enclosing a paper, 'A recommendation for photography on the Moon's surface' [not included with this letter], which is part of a report by Gold for a summer study group. Says that Gold thought that Dr Mueller might like to see it. 25 October 1965