Letter from Thomas Gold to Professor Fred Hoyle, director, Institute of Theoretical Astronomy, Madingley Road, Cambridge, England Expects to turn up in Cambridge on 24 May and to stay for at least that week and perhaps one or two days into the following week. That will give them enough time to discuss science and contemplate the nature of this crumbling world. Tells him to feel free to organize any lectures for him, such as on pulsars or on the moon. He understnds the nature of the acoustic signal, but since it required a deep deposit of dust no one else has been able to think of this explanation. 9 May 1970