Letter from Thomas Gold to Professor D W Kerst, Department of Physics, The University of Wisconsin, 475 North Charter Street, Madison, Wisconsin Is very willing to come out to Wisconsin for a colloquium. As he generally tends to be overburdened with travelling, would prefer to combine it with some other trip. Therefore he proposes that he will write towards the end of August at the latest and suggest one or several Fridays in the Fall that would fit in. If by then no mutually convenient date can be found, he would be prepared to make a special trip on a date convenient to Kerst. Gold's present interests are in the moon and in pulsars. Probably pulsars are of more interest to a general physics audience. 8 June 1971