This series focuses on the Junior House/Chapmans pupils and staff since its opening in 1910. It first comprised the Junior Department with facilities for boys boarders and classrooms. The house was renamed Chapmans in September 1960, after Frank Emerson Chapman, first Housemaster of the Junior House; it became a Senior House. Most of the series is made of photographs, house photographs as well as more informal photographs.

An inventory an valuation of furniture, fixtures and effects in and upon the premises known as 'Junior House', made for transfer from E. Pickering Clarke to the Trustees. Contains information on the building, its fixtures and fittings, in the dining room, kitchen, garden, toilets, pantry, sick room, matron room, dormitory, study, classroom, bathrooms, coal house, workshop, tool shed, gardens and tennis nets. Thirty-three pages A to AG.

This series focuses on School House pupils and staff in the 20th century. Most of the series is made of house photographs, various informal photographs as well as records books and punishment books.

A scrapbook compiled by John Barber from 1954 to 1979 and by Terence Treanor from 1979 to 1994, presented to the O.O. Club by C.H. Falconer. The album contains photographs of and newspaper cuttings related to O.O. Club events and Old Okahmians, their lives at school and after.

Two similar photographs (A and B) of Anthony Tilke, Head of Library, standing in front of the building site of the new Library, around 1995.

This sub-series focuses on the administration and everyday running of the Junior House/Chapmans.

The Standing orders of Deanscroft in 1958, including the daily routine of the house and rules. The item was owned by T.C.F. Blagg and presented by Henry Blagg. Four pages A to D.

This sub-series contains various items related to Junior House/Chapmans. The bulk of the sub-series is informal photographs of everyday life in the boarding house in the 1950s/1960s.

This sub-series contains various informal photographs of the boys and staff of Barrow since its inception in 1997.