Letter from Valerie Sorenson, secretary to Thomas Gold, to Dr Martin Spergel - PL 25, Research Scientist, Coordinator of Research Lecture Series, Gruman Aircraft Enginneering Corporation, New York Thanks Dr Spergel for inviting Thomas Gold to present a lecture at Grumman but thinks that it is doubtful that he will be able to accept the invitation. This is because he will not be back until 24 August. He plans to leaves the country shortly that after for the whole of the Fall term. 9 August 1965