1975 The Mighty ISIS S01E07 BIGFOOT

The Secrets of Isis, Original title: Isis TV Series 1975–1976
JoAnna Cameron in The Secrets of Isis (1975)
An archaeologist gains an amulet that allows her to transform into the superheroine goddess Isis and fight evil.
Creator: Marc Richards
Stars: JoAnna Cameron, Brian Cutler, Joanna Pang
S1.E7 Bigfoot Episode aired Oct 18, 1975 TV-Y7
JoAnna Cameron in The Secrets of Isis (1975)
Someone, or something, huge is living in seclusion in the local mountains, and some of the students think it's the legendary monster "Bigfoot". Isis investigates.
Director: Arthur H. Nadel
Writers: Michael Reaves, Marc Richards
Stars: JoAnna Cameron, Brian Cutler, Joanna Pang