A folder from De Havilland Propellers containing a memo relating to obsolete parts to be removed from the catalogue index dated 4th January 1963, an information sheet relating to microfilming data containing instructions for drawing standards to ensure clarity when reproduced dated 21st March 1963, an engineering standards catalogue of standard parts, a pencil sketch diagram and measurements, a catalogue of parts sheets, a specification index dated November 1963, a data sheet with component diagrams, a memo to Drawing Office Section Leaders and Draughtsmen: Space Vehicle Project relating to Pipe Assemblies (Rigid Pipes) dated 21st March 1961, and a catalogue page from Bond's of Euston Road Ltd relating to a roller chain drive.