Logo design credit from Todd Klein via his Facebook posting Comics Logos C #109: CRYPT OF SHADOWS on 12 October 2021.
Wolverton's splash panel was rejected and replaced by one drawn by an unidentified artist, according to an article in Basil Wolverton's Gateway to Horror #1 (Dark Horse, 1988), which reprinted this story. Speculation as to the artist includes Carl Hubbell, Vern Henkel and Carl Burgos.