The UK Govenments marketing and comunication agency was the Central Office of Information (sounds very omnious) part of the COI was the Central Film Library. Within this CFL publication are such wonderful short film titles as Atomic Energy Explained, Metals of the Nuclear Age, Living with Radiation, Project Tinkertoy, Winter Construction? can it be done?, The World of Semiconductors, Learning in Slow Motion (Training for the Subnormal) Man Machine Charts. All these films and others were available to hire, most are 2 reels and cost around 10 shillings (50p) My favorite title has to be Project Tinkertoy. What I hear you say is/was Project Tinkertoy?????? Project Tinkertoy running at 27mins over 3 reels for 15s, was an account of the joint US Navy and National Bureau of Standards project for the development of a new system for the design and manufacture of electronic assemblies??????? so there you have it. If that interests you, and you fancy a night in with a film, then put your order in now for all 3 reels of this CFL film (CAT US322) it just might not be available any more though.