All of the above (except Atkinson on the beagles) are available from the Archivist at Radley College.
The primary source for the school’s history is The Radleian magazine. The full text of the magazine and the earliest histories can be accessed here: Radley Archives online
There have been three official histories of the College, commissioned to celebrate the fiftieth anniversary of the foundation, the centenary and the sesquicentenary respectively.
Sicut Columbae: fifty years of St Peter’s College, Radley By TD Raikes and other Old Radleians. James Parker & Co., Oxford and London, 1897. Read it in full online.
Raikes’ history of the first fifty years of the College is primarily based on reminiscences and first-hand accounts of the earliest years, informed by an author who had been schoolboy, prefect, teacher and close family member of several other Old Radleians. The sections on school sports are particularly valuable.
A second edition was produced by Ernest Bryans in 1925 under an amended title Sicut Columbae: a history of St Peter’s College, Radley, 1847-1924. Basil Blackwell, for the Radleian Society, Oxford . Bryans made a few corrections to the earlier text and added chapters which cover the intervening twenty-five years.
The history of Radley College, 1847-1947 By AK Boyd. Basil Blackwell, Oxford, 1948. Read it in full online.
Boyd’s history of Radley was written to celebrate the school’s centenary. Like TD Raikes, he had an unrivalled personal knowledge of the school, but he also sought to build on the earlier history with much more documentary material. To this end, he virtually created the College Archives by sourcing all of the extant material from anyone who had any past connection with the school, occasionally commissioning transcripts where the original was retained by the families who owned it. The strength of Raikes’ history was the depth of first-hand memoirs; Boyd’s in his use of, and extensive quotations from, the source material.
No ordinary place: Radley College and the public school system By Christopher Hibbert. John Murray, London, 1997. ISBN 0719551765
Christopher Hibbert’s history of the College was commissioned to celebrate the 150th anniversary of its foundation in 1997. Hibbert was described as “the leading popular historian now living in England”. His approach was to place the school’s history within the context of public school education in the nineteenth and twentieth centuries. This allows a thematic approach within each chronological section.
The Buildings and Grounds
Recollections: the life and travels of a Victorian architect Sir Thomas Graham Jackson, 1835-1924. Ed. by Nicholas Jackson. With an introduction and gazetteer by James Bettley. Unicorn Press, London, 2003. ISBN 0906290724
Thomas Graham Jackson was the architect who designed the infirmary and cloisters, chapel, dining hall, H Social, the South African War memorial, and the War Memorial gateway (Mem Arch). Updated version of the 1950 edition edited by Basil Jackson
Looking at Radley: an architectural and historical survey of the earlier buildings By MT Cherniavsky & AE Money. Radley College, 
Based on three articles and a course on the history of the buildings taught by Michael Cherniavsky whilst on a sabbatical at Radley College in1979. He describes the exterior views of Radley that would still be recognized by a visitor from the time of Warden Sewell in the 1850s. Tony Money, Archivist at Radley, then wrote about the various interior uses to which the buildings have been put over the years. The book is illustrated from photos in the College Archives.
Radley Hall: the rediscovery of a country house By Alison Maguire in Architectural History, Vol. 44, Essays in Architectural History Presented to John Newman (2001)
Detailed study of Radley Hall, now known as the Mansion, by a member of the architectural team responsible for its renovation after the fire in 1997.
The architect of Radley Hall. By Vyvyan Hope Article in Country Life, 27 January, 1950.
Early history of the estate
Capability Brown and the eighteenth-century English landscape. 2nd edn By Roger Turner. Chichester, Phillimore, 1999. ISBN 1860771149
A brief note in the gazetteer about Brown’s work for Sir William Stonhouse at Radley Hall in 1770-1.
A detailed study was undertaken by Clare Sargent in 2017 for the Tercentenary of Capability Brown. It can be read online at 100 Radly objects: Radley’s living book
Turner and the picturesque. I. John Gage in The Burlington Magazine, Vol. 107, No. 742 (Jan., 1965), pp. 16-25.
Discusses JMW Turner’s early watercolours of Radley Hall.
Account of the Earthquake that Happened at Oxford and the Parts Adjacent Sept 17. 1683 By a Fellow of a College in that University, and of the Royal Society. in Philosophical Transactions of the Royal Society (1683-1775), Vol. 13, (1683), pp. 311-321.
Specific items within the College
The Radley altarpiece By Tony Money. [Radley College, 2007]
A study of the history of Brabant altarpieces, focussing on the Radley retable made in Antwerp in 1515. [Copies are available from the Archivist]
Some sixteenth-century Antwerp carved wooden altar-pieces in England Kim Woods in The Burlington Magazine, Vol. 141, No. 1152 (Mar., 1999), pp. 144-155.
Natural history & Geology
The fauna and flora of Radley and the neighbourhood By the Radley College Natural History Society. James Parker, Oxford, 1906
Pioneering survey compiled from the field notes of the College Natural History Society, organised by classes and genera with locations.
The Radley district: its history, botany, entomology and geology Ed. by T Field. Parker & Son, Oxford, 1912
Individual chapters on history, botany and entomology by the Warden and staff of Radley College, and on geology by M Odling, F.G.S., formerly a boy at the school, who became one of the first Demonstrators in Geology at the University of Leeds. Material was drawn from the College Natural History Society records and excursions.
Quaternary Processes and Environments in the upper Thames Valley J. Briggs and D. D. Gilbertson. in Transactions of the Institute of British Geographers, New Series, Vol. 5, No. 1 (1980), pp. 53-65.
Oxford stone WJ Arkell. London, Faber & Faber, 1947.
Includes brief discussion on the stone used for Radley Hall.
A regional description of Southern Oxfordshire RL Howard. 1960. Typescript held in Radley College Archives.
The geology of Oxfordshire Philip Powell. Wimborne, The Dovecote Press, 2005.
Manly and muscular diversions: public schools and the nineteenth-century sporting revival Tony Money. Duckworth, London, 1997
Argues that the political and economic stability of the British upper class and, more importantly, the enthusiasm of boys at English boarding schools, was a crucial factor in the spread of contemporary team sports around the world. Draws extensively on material from Radley College Archives. Highly acclaimed. [Copies are available from the Archivist]
Football at Radley, 1847-2000 Tony Money. [Radley College, 2000]
Study of the development of football in the nineteenth century as individual schools created their own game, including Radley Football, and the subsequent adoption of Rugby Football as a nationally recognized sport. [Copies are available from the Archivist]
The Archives contain a collection of unpublished memorabilia by Old Radleians. The most significant biographies about specific Wardens and staff are:
A forgotten genius: Sewell of St. Columba’s and Radley By Lionel James. Faber and Faber, London, 1945.
Biography of William Sewell, founder of Radley College by a former member of staff. Makes extensive use of Sewell’s diaries, letters and sermons.
A memoir of the Reverend George Wharton, Precentor of Saint Peter’s College Radley By Roscoe Beddoes. Oxford University Press, 1931
‘Kitty’ Wharton was the most eccentric and long-serving of the nineteenth century schoolmasters of Radley
Thomas Field, D.D.: a memoir By Harold S. Goodrich. SPCK, London, 1937
Thomas Field was Warden of Radley, 1897-1913
In addition, biographies and autobiographies by Old Radleians often contain brief accounts of time at the school, particularly Harold Monro, Gerald Brenan, Peter Cook, Lord Kilbracken, and Andrew Motion
Radley in fiction
Notable early novels sets in Radley:
Jaspar Tristram By AW Clarke. William Heinemann, London, 1899
“A sad evocation of the torments of adolescent homosexual love.”
AW Clarke: pseudonym of Edward Ashley Walrond Clarke. He entered Radley in 1876. Left in 1879, and followed a career in the Foreign Office, ending as Consul-General to Zanzibar, 1909-1913. He married Angelena Milman in 1908. Died at Zanzibar, 14th February, 1913.
The puppets dallying. Greening & Co., London, 1905 and Swan’s milk. Faber and Faber, London, 1924. By Louis Marlow.
Louis Marlow: pseudonym of Louis Umfreville Wilkinson. Entered C Social, 1895, left 1899. Novelist and biographer who wrote under both names.
Young England By Douglas Strong. Methuen, London, 1919
Acclaimed when it was published because the novel was written within a year of leaving the school, whilst convalescing from wounds received on the Western Front: “he was no blind lover of a system under which he had risen to the top; he longed for its reform, and this book describes his own constructive policy of change.”
Douglas Strong: pseudonym of Desmond Bertram Cancellor. Entered C Social in 1912, left 1916. He was the Senior Prefect. The novel was published posthumously after he was killed in action at Presau, 1st November, 1918, an action in which he was awarded the Military Cross.
Caper sauce By SPB Mais. Hutchinson, London, c1950.
SPB Mais was a part-time teacher at Radley during the Second World War, whilst Eastbourne College was evacuated to Radley. The novel describes the wartime adventures of a family forced to keep moving to find work, with Radley and Eastbourne thinly disguised as ‘Lumbury’ and ‘Sherstin’.
Radley village supports a flourishing local history society who have produced a number of publications and maintain an archive of local material.
Radley vicarage by Radley History Club, 2005
A report of a ‘buildings record’ survey and archive research undertaken to determine the history, construction, and later development of this 14th-century building
The history of Radley by Patrick Drysdale … [and others] Radley History Club, 2002
History of the village from prehistory to the present