The correspondents are:
Dr Krishna Bahadur, Professor W Baillaud (marijuana), Dr David Baltimore, Dr Horace Barlow, Professor D R Bates (H S W Massey 60th birthday), Dr Martin C O Bax, Dr D Beale, Dr George W Beadle (Gödel), Clelia Becker, Dr B J Bedell, Sir Gavin de Beer, Dr C A Beevers (minature molecular models), Mrs Juanita Bejec, Dr Seymour Benzer (1962), Dr Paul Berg, M Berger, Dr Daniel Bergsma, Professor Graeme P Berlyn, Professor J D Bernal, Dr Sidney A Bernhard, Dr P M Bhargava, Roman Bittman (Canadian Broadcasting Corporation), Professor (Lord) P M S Blackett, Michael Blake, Dr Konrad E Bloch, Arthur Blumenfeld, Professor Robert M Bock, Dr Larry E Bockstahler, Eleanor Bogan, Professor Ernest Borek, Dr Edward A Boyse, Professor Jean Brachet, Roland Bradbury, Sir Lawrence Bragg, Dr Valentin Braitenberg, Dr Stanley Bram (DNA structure, includes Bram paper with 2 b/w photographs), Sydney Brenner, Professor C Bresch, Dr Peter Bretscher, Nicholas Brewin (Cambridge Research), Dr B A Bridges, Professor G S Brindley, Dr Roy J Britten, Dan Brown, Dr G L Brown, Dr P R J Burch, Dr E H S Burhop (H S W Massey 60th birthday), Professor K Burton, and Mrs E Button.