Letter from Mrs Carrie Flood to Mr Ernesto Gianni, Accademia Nazionale dei Lincei, Via della Lungara, 10, 00165 Roma, Italy Encloses the proofs of Professor Gold's paper to appear in the Proceedings of the Symposium on 'Radiosorgenti pulsate e attivita di alta energia nei resti di supernovae'. They have changed the conclusions to the summary, since Gianni indicated that a summary was needed. All other changes are self-explanatory. 23 December 1970