I was looking in to the history of Morse Code and aside from a couple of books in my collection (The CW Way Of Life from RSGB, and The Art & Skill Of Radio Telegraphy - the 5th edition is dirt cheap if you order direct from LuLu Publishing, earlier editions are free as a PDF from the author), I hadn’t seen much in the way of documentaries.
Happened across this one from 1979 made by the BBC which may be of interest to CW enthusiasts and radio fans.
I especially liked one chap has the callsign THX! 
Enjoy and 73.
