The correspondence in this section is presented as follows:
J/1-J/341: Alphabetical by correspondent, 1927-1994.
J/342-J/412: Shorter scientific correspondence, 1936-1993. Presented in chronological order; indexed.
J/413-J/422: Requests for off-prints, 1940-1990. Presented in alphabetical order; not indexed.
J/423-J/443: References and recommendations, 1948-1985 and undated. Further subdivided as follows:
J/423-J/424: Grants and funding, 1948-1976
J/425-J/430: Higher degrees, 1950-1980
J/431-J/435: Royal Society, 1951-1985
J/436-J/437, Honours and awards, 1951-1983
J/438-J/442: Appointments and promotions, 1954-171
J/443: Requests for advice
Note that some recommendations etc appear in the files of correspondence arranged alphabetically by correspondent, J/1-J/341.