Letter from Thomas Gold to Professor R A Lyttelton FRS, Institute of Astronomy, Madingley Road, Cambridge, England States he will be in Cambridge on Friday 23 February to give a colloqium. He would like best to speak about the Moon. 'The Surface of the Moon; the Major Questions Unanaswered'. Should this be in the Cavendish rather than IOA? Gold will phone from London on the Wednesday or Thursday. Enclosed is the article on Skylab which may be his swan song as a NASDA contractor. 4 February 1974