This movie is the second time Ezra Godden plays a character who wears a 'Miskatonic University' T-shirt in a Stuart Gordon film. The first one was Dagon (2001), in which they both were involved.
On the DVD commentary for another Stuart Gordon movie called From Beyond, Gordon and Brian Yuzna mention that they had planned to make an adaptation of Dreams in the Witch-House in the 1980s after the success of Re-Animator. From Beyond ended up getting made instead.