Image description: a screenshot from the Wikipedia page for the Doctor Who TV series, with a user-added caption that reads "Preserve the media you can before it's gone forever." The Wikipedia article reads, "No 1960s episodes exist on their original videotapes (all surviving prints being film transfers), though some were transferred to film for editing before transmission and exist in their broadcast form. [88] Some episodes have been returned to the BBC from the archives of other countries that bought prints for broadcast or by private individuals who acquired them by various means. Early colour videotape recordings made off-air by fans have also been retrieved, as well as excerpts filmed from the television screen onto 8 mm cine film and clips that were shown on other programmes. Audio versions of all lost episodes exist from home viewers who made tape recordings of the show. Short clips from every story with the exception of Marco Polo (1964), "Mission to the Unknown" (1965) and The Massacre (1966) also exist."
There was documentary done a few years back on the comedian Bob Monkhouse and about his obsession archiving media, a lot of which were thought to be lost forever. He had multiple VHS players set up around his house to record things in an era where not many of the general public had one. He also kept tv guides and had written into the margins if there was a change in the schedule. He was actually taken to court in the 70's for copyright infringement but the case was thrown out, though quite a few items from his archive were seized and never returned.
It was called The Secret Life of Bob Monkhouse. I think there might be a very poor quality version of it on YouTube.