Letter from Thomas Gold to Dr R N Bracewell, Radio Propagation Laboratory, Stanford University, Stanford, California Talking about his having heard that some people at ARPA [Advanced Research Projects Agency] would like Evans and his committee to carry out the task of obtaining an Arecibo [Ionospheric Observatory] feed, and even to decide future policy on other feeds. The letter has been folded in half and marked 'confidential'. 18 September 1967