i. Letter to Krishnan from Powell planning for a meeting of scientists in India regarding hazards from nuclear weapons before the meeting of Indian Science Congress ii. Letter to Krishnan informing he has received two letters regarding the meeting from Powell and Dr. P. Biquard ii. T. V. Ramamurti to Powell informing Krishnan is in Europe, to address the Royal Society, and his postal address there iii. Powell to Krishnan at his address in Europe about the same meeting iv. Copy of a letter from Jawaharlal Nehru to Krishnan stating he is agreeable to the meeting proposed by Powell v. M.O. Mathai to Krishnan coordinating the communication between Krishnan with Powell and Nehru vi. Mathai to Powell informing Nehru has welcomed the meeting proposal vii. Bertrand Russell to Krishnan inviting him to join the committee for meeting in India in December 1956 viii. Powell to Krishnan regarding logistics and participation at the atomic hazards conference in India ix. Russell to Krishnan informing the progress made with the proposal to hold the atomic hazards meeting in India x. Telegram from Powell proposing postponing the conference to spring in light of disturbed situation, and Krishnan's response accepting the postponement xi. Homi Bhabha to M S Thacker discussing the logistics of conducting the meeting xii. Thacker's response to the previous letter