This story is based on 'Screaming City' in Witches Tales (Harvey, 1951 series) #7 (January 1952).
This story is based on 'Terror Under Glass' from Fantastic Fears (Ajax; Farrell, 1953 series) #8 (July-August 1954).
This story is based on an unknown pre-code story, with new title and art.
This story is based on an unknown pre-code story.