The Dunwich Horror/Fun Facts
From The Grindhouse Cinema Database
- Keir Dullea and David Carradine were on the ideas list for the male lead.
- Peter Fonda turned down the role of Wilbur Whateley.
- The odd symbol that appears again and again -- on Wilbur's ring, on his grandfather's staff, in the design on the main floor, etc. -- is actually an ancient Native American symbol commonly termed "Thunderbird in sun".