Letter from G P Gladstone, Haverford, Pennsylvania to Howard Walter Florey Grateful to Poole for spotting discrepancy in manuscript - has asked for permission to use Dixon's figure in chapter on hypersensitivity - application for microscope has fallen through - is enclosing letter from Dr Chalkley of Research Grants - has told Chalkley it is impossible to provide all the details wanted - comments on this - has withdrawn application - if department can supply lamp, can make an adequate fluorescent set up - comments on this - is writing up work he did with Mudd on staphylococcal immunisation field trials - sails on 18 August and attends conference in London from 27 August to 1 September - hopes to be back in laboratory on 3 September - Dr Yoshida comes on that date. 17 July 1961