Correspondence

Archive Unit

Scope and Content

Comprises:

  • B1, File, Company Secretary's Office correspondence, 1956-1958.
  • B2, File, Company Secretary's Office correspondence, 1958-1960.
  • B3, File, Company Secretary's Office correspondence, 1959-1960.
  • B4, File, Company Secretary's Office correspondence, 1960.
  • B5, File, Company Secretary's Office correspondence, 1960-1961
  • B6; File, Company Secretary's Office correspondence, 1961.
  • B7; File, Company Secretary's Office correspondence, 1961-1962.
  • B8; File, Company Secretary's Office correspondence, 1962-1963.
  • B9, File, Company Secretary's Office correspondence, 1963.
  • B10, File, Company Secretary's Office correspondence, 1963-1965.
  • B11, File, Leo patents, 1950-1961;
  • B12, File, Leo patents, 1961-1991 (mostly 1961-1965);
  • B13, File, LEO Computers Ltd. Finance, 1959-1963;
  • B14, File, International Computers Ltd, 1965-1975 (probably a continuation of the series B1-B10);
  • B15, File, Lyons Computer Services Limited, 1970-1972.
  • B16, File, Lyons Computer Services Limited, 1972-1974.
  • B17, File, Computers - computer courses (general information), (in fact, mostly a proposal from Structural Communication Systems Limited), 1970-1972;
  • B18, Copy of collection of Ernest Lenaerts papers. Copy was made for Peter Bird in 1992. Includes correspondence from Lenaerts secondment to Cambridge during construction of EDSAC, 1940s-1960s;
  • B19, Copies of important and miscellaneous correspondence, collected by Peter Bird. Includes: correspondence leading to merger with English Electric, first suggestion to name the computer project LEO (1949), visit by Lord Halsbury (1950), memorandum from Simmons to Major Montague Gluckstein re demonstration of calculator (1951), report by Thompson to Gluckstein (1952), future policy for LEO (1953), LEO Report on budget and profits (1955), agreement between Lyons and Imperial Tobacco Company for LEO (1956), John Pinkerton's job application letter (1948), closing down of LEO I and offer to the Science Museum, Lyons office mechanisation in the 1920s, and much else. 1920s-1990s.