The collection provides good documentation of Richards' research and lectures on nmr and an extensive scientific correspondence. The research material includes early work with H. W. Thompson on penicillin as well as the later nuclear magnetic resonance (nmr) work. Although Richards' lectures are well documented, material bearing on his publications is slight, with the exception of the second (1964) edition of "Numerical problems in advanced physical chemistry," prepared with J. H. Wolfenden and E. E. Richards. A number of societies and organizations are well represented in the manuscripts, in particular the Royal Society. There are comprehensive records of Richards' chairmanship of its Hooke Committee, the committee responsible for organising Royal Society discussion meetings and review lectures. Richards' scientific correspondence forms the largest section in the collection. His files relate principally to his undergraduate chemistry students at Lincoln and those who researched in various capacities in his laboratory. There are also important sequences of correspondence with manufacturers of nmr equipment, including the Perkin-Elmer Corporation and Varian Associates.