The whole 3-issue "Nightmaster" story, from SHOWCASE 82-84:
The first issue,
SHOWCASE 82, March-April 1969, is by Dennis O'Neil, with art by Grandenetti/Giordano.
Parts 2 and 3, in
SHOWCASE 83, May-June 1969(Wrightson's 4th story for DC)
and
SHOWCASE 84, July-Aug 1969 (Wrightson's 7th story for DC), are the first two book-length stories Wrightson did. And the only ones for about three years, from 1969-1972.
Uncredited, Wrightson was assisted on the art by Jeff Jones and Michael Kaluta.
The third full-length story Berni Wrightson illustrated was the award-winning "Dark Genesis" in SWAMP THING 1, November 1972!
