Letter from Thomas Gold to Dr Paul Horowitz, Department of Physics, Jefferson Physical Laboratory, Harvard University, Cambridge, Massachusetts Hopes Horowitz will take up astronomy and do this at Cornell. They would be very keen to have him. If he wishes to defer his decision until 1973, then Gold feels he should try and visit once or twice for significant periods of time. Would like to know how a scanning X-ray machine works. Hopes he will not be totally lost to the pulsar field in the next year or two. 3 November 1971