The topless scenes were intended to be played by Pepper Thurston, but she refused at the last minute, and since the investors insisted the film contain nudity, writer Carla Rueckert performed the scenes under a pseudonym. They were the first scenes shot.
According to Carla Rueckert, he word "hidan" refers to a "high place" or "holy place". Maukbeiangjow is the name of the holy place in the film, though Hugh Smith remembers Maukbeiangjow being the name of a demon.
"Phineas T. Pinkham" is, in fact, a nickname Don Elkins used in life, rather than an attempt to take his name off the picture.
The scene after the opening credits copies the "your mission should you choose to accept it" scenes of Mission: Impossible (1966).