Historical and biographical material

Scope and Content

  • /A1 Photo of John Leech with "possibly Wim Klein (Dutch calculating prodigy)", 1953
  • A/2 John Leech's unknown coding instructions, undated.
  • A/3 Photo of machine. Presumably a Ferranti computer, 1953.
  • A/4 Input routine for reading in tapes punched for Mk I, undated.
  • A/5 Handwritten notes detailing collection contents compiled by Jennifer Leech, undated.