This series focusses on the headmastership of Walter Lee Sargant (1902-1929) and contains items relating to the life at School in the early 20th century, its staff and pupils.

A press cutting regarding the daily life at Oakham School in the Victorian era and regarding the article "Oakham School 140 years ago" by John Barber published in the Rutland Record no. 3.

This series focusses on the headmastership of Rev William Spicer Wood (1846-1875) and contains items created by the headmaster himself as well as items relating to the life at School in the mid-19th century.

This series focusses on the headmastership of Rev Edward Vere Hodge (1879-1902) and contains items relating to the life at School in the late19th century, its staff and pupils. The series contains some of the earliest photographs of Oakham School's collection.

This file focuses on correspondence asking/ giving John Barber permission to use certain material in his book.

This series focusses on the headmastership of Oliver Richard Sylvester Bull (1977-1984) and contains items relating to the life at School in the 1970s and 1980s, its staff and pupils. One of the files relates to Michael Stevens as Acting Headmaster for two terms in 1985.

This sub-series relates to the history of Old School, oldest building of Oakham School, in Cutts Close park. It is made of a collection of photographs and art work; of newspaper cuttings and letters, mostly relating to the debate concerning the refurbishment of the building and preserving the frescoes painted by Mary Sargant Florence.

A newspaper cutting from The Independent reporting on letters revealing a previously unknown male love of Oscar Wilde, and on the debate concerning the frescoes in Old School. Hand-written note from Rod Smith to Graham Smallbone at the bottom of the article.

This series focusses on the headmastership of John David Buchanan (1958-1977) and contains items relating to the life at School in the 1960s and 1970s, its staff and pupils. The bulk of the series consists of books, publications, letters, speeches and sermons written by Mr Buchanan himself.

This series focusses on the headmastership of Grosvenor Talbot Griffith (1935-1958) and contains items relating to the life at School in the mid-20th century, its staff and pupils.