Essential Vertigo: Swamp Thing — Vertigo
Issue: #18
Last valuation update: 2026-09-17
Reprints: Saga of the Swamp Thing #37
Creators: John Costanza, Alan Moore, Rick Veitch, Steve Bissette, John Totleben
Characters: John Constantine, Emma, Benjamin Cox, Sister Anne-Marie, Swamp Thing, Abby Holland, Judith, Invunche