Memorandum from Thomas Gold to all Arecibo staff Announcing that Dr Rolf Dyce willtake on the duties of Acting Director, AO, as of 1January 1970. [1971?] Asks all staff to give him all the support and help he requires, and thereby try to minimize the disturbance to the function of the Observtory the Dr Pettengill's departure will cause 21 December 1970