On his retirement from Reading in 1982, Series appears to have discarded much material. Although he remained in touch with physics, continuing to lecture and to attend conferences, he and his wife spent much of their time at their Cornish home, where research and administrative facilities were of necessity limited. These factors have resulted in gaps in the record at all levels.
There is some biographical and personal material including several autobiographical notes and narratives, some quite lengthy, on his career and scientific interests, written at various dates from 1963 to 1994. There is unfortunately virtually no documentation for Series's early life, Oxford University and college days at St John's and St Edmund Hall, or of his connection with Reading School as pupil and Governor. His appointment, career and retirement at Reading University are more fully recorded, as are his later honours. The surviving research papers represent Series's own selection of topics of special interest to him: some, such as 'Spontaneous emission of light' cover a long time-span 1964-1977, while others such as 'Optogalvanic spectroscopy' was his last research at Reading 1981-1983. Series seems to have conducted a later revision of some of the material, perhaps in 1990, adding brief explanatory notes on its interest.
There is a substantial record of Series's achievement as a popular and prolific lecturer to research groups or conferences, over an extended period, 1959-1988. Publications and editorial papers form only a partial record of Series's considerable editorial commitments, though it does include material on the founding of the European Journal of Physics with which he was closely involved, serving as its first editor. Visits and conferences material is similarly scanty in view of the many conferences and lecture engagements undertaken by Series. It includes several of his visits under the Royal Society Exchange Programme, and also documents the major world tour 1982-1983 following his retirement from Reading. The surviving correspondence dates in large part but not exclusively from Series's retirement years. Many of the letters are therefore incoming only, but Series frequently jotted down notes of his replies, or of calculations and ideas arising from the correspondence. He might also, at a later date, add a note on writers' names, careers and connections.