One of the many notorious 70's "unknown" documentaries, The Mysterious Monsters covers topics such as Bigfoot and the Loch Ness Monster. Pictures, sounds, and videos of these two monsters are examined by Peter Graves, the host. Psychics, hypnotism, and the history of Bigfoot in many ancient cultures is also scrutinized.

People go and search for the legendary Bigfoot creature.

Bigfoot: America's Abominable Snowman focuses on the legend of Bigfoot/Sasquatch throughout North America. Dr. John Napier acts as host and analyst of the evidence presented in the documentary, including Roger Patterson's famous October 1967 film allegedly showing a Bigfoot in Northern California (Bluff Creek). Numerous eyewitness testimonies are given along with expert opinions on the subject matter.

A recording of what is supposedly Bigfoot.