I added this video as an afterthought to the recent post on a new Tim Dinsdale book but I add it again in case anyone missed it. I originally posted my own version three years ago but removed it because of copyright reasons. Someone else has now posted it on YouTube, so the copyright issue now belongs to them.
The documentary was a bonus feature to the VHS version of the 1977 film "Pete's Dragon". It also appeared on DVD but seems to have dropped out of the feature list on later releases. However, the documentary pre-dates "Pete's Dragon" and was actually released on US educational TV around 1972 and appeared in British cinemas in 1974 (presumably as a second feature to a main Disney film).
This is a review of the film (original link) for the 2001 DVD release but it appears to have gone from the 2009 release.
"Man, Monsters, and Mysteries" is a fairly fascinating 25-minute piece which again analyses fantastical mysteries and myths on animals. The majority of the program focuses on the 'elusive' Loch Ness monster, who appears in animated form, voiced by Disney veteran Sterling Holloway (the original Winnie the Pooh among others). The interaction between Holloway and Winnie the Pooh narrator Sebastian Cabot is a lot of fun, as the monster explains individuals who have been trying to track him and how he's teased those in search of him by allowing a mystery to prevail. Pristine live action sequences contain comments from folks who claim to have seen Nessie. While this isn't directly related to the movie, other than in theme, it's an awesome and quite entertaining inclusion.
To this I can add that you will see various personalities from the search for Nessie such as Tim Dinsdale, members of the Loch Ness Investigation Bureau, Roy Mackal and so on. You can also read about the visit of the producer, Ken Peterson, to Loch Ness in 1969 in "Project Water Horse" by Tim Dinsdale.
Tim tells us Ken arrived with his wife Harriet with a film crew in August 1969 for a two week stint. It seems their arrival drew practically all those involved in the hunt to offer their services. Well, apart from one. Frank Searle had arrived just eight weeks previously to start his 15 year watch of the loch.
Not surprisingly, there was footage shot which did not make it into the final release. I would have been particularly fascinated to see the footage of the monster hunters resorting to their watering hole at the "Lodge" for a bit of R&R.
Overall, the film rightly takes its place in the history of the Loch Ness Mystery.