Folders C.34-C.50: Numerical problems in advanced physical chemistry by J.H. Wolfenden, R.E. Richards, and E.E. Richards, 2nd ed. Clarendon Press Oxford 1964. Contents of a folder inscribed 'Wolfenden Problems': correspondence between J.H. Wolfenden and R.E. and E.E. Richards, 1956-1965, regarding the preparation of a second edition of Wolfenden's Numerical problems in advanced physical chemistry. R.E.…