Wrightson's first mainstream work for someone other than DC was for three issues of a short-lived WEB OF HORROR magazine:

In WEB OF HORROR 1, Dec 1969, he contributed "The Game that Plays You", a 6-page story, where an arcane shop keeper sends a guy into a monster-filled world. Wrightson's 10th published mainstream story.


WEB OF HORROR 2, Feb 1970, has two Wrightson stories:
"Mother Toad", 5 pages about scientifically evolved frogs.
and
"Breathless", a 7-page story of astronauts who have crash-landed and fight among themselves to survive. Wrightson's 12th published mainstream work.

WEB OF HORROR 3, April 1970, has the story "Feed It", a 6-page offering that is more in the same style as Wrightson's DC work, a gothic story in an old mansion with a creature in the basement. Wrightson's 13th published mainstream work.

Part of these and many of Wrighson's pre-professional fanzine stories and pin-ups are collected in the books BACK FOR MORE (1978), THE MUTANTS (1980), and in their entirety in THE REAPER OF LOVE (1988).