Early history: Papers that lead up to the decision to purchase an Atlas computer and install it at a new Atlas Computer Laboratory run by NIRNS on the Chilton side of the Harwell site Minutes of committee meetings: Minutes of the Atlas Computer Committee that managed the Laboratory for the whole of its life. The committee initially reported to NIRNS but in 1965 transferred to the new Science Research Council (SRC) Progress reports: Quarterly Progress Reports produced by some of the groups in the Laboratory including details of the graphics software and developments on the 1906A from 1973 to 1975 Other reports: Reports produced by Atlas Laboratory staff or about the Atlas Laboratory including trip reports and technical notes News cuttings: Press cuttings concerning the Atlas Laboratory In-house publications: Newsletters and technical publications produced at the Atlas Laboratory including brochures for other computers Committee papers: Internal papers for various committees Personal recollections ACL publications: The Atlas Computer Laboratory produced a number of publications intended for visitors or potential customers Books: Books published by Laboratory staff including games-playing programs, compiling techniques and the history of the London University Atlas computer Early Atlas publications: Early Atlas publications provided by Brian Chapman FR80 reports: Internal papers produced during the definition of the FR80 Service at Atlas Atlas manuals: Manuals and large documents relevant to the history and technical specification of the Atlas 1 computer ICL1906A manuals: Manuals and large documents relevant to the technical specification of the ICL 1906A and the graphics software produced using it Other manuals and papers: Documents relevant to the history of the Atlas Computer Laboratory including the Flowers Report, Mercury Autocode manuals and a description of the Stretch Master Control Program