Hitler sister footage to be shown
Paula Wolf, Hitler's youngest sister who died in 1960 aged 64, was asked to share personal stories about her brother in the documentary.
Directed by Peter Morley, it also included interviews with Hitler's associates and fellow employees.
The documentary was discovered by TV historian Dick Fiddy, who traced footage to Germany and the US before finding the full show in London.
It will be shown alongside Shaggy Dog, an ITV drama by playwright Dennis Potter that was rediscovered by TV enthusiast group Kaleidoscope.
Previously thought destroyed after its only broadcast in 1968, the 51-minute show was found earlier this year in the LWT archive at London's South Bank.
No copies were made of numerous vintage broadcasts due to the expense of making early TV recordings.