Creating Comics: José Villarrubia's incredible colour restoration on new “Absolute Swamp Thing” collection surely makes it a “must buy” – downthetubes.net
Advance Preview: Swamp Thing #1 by Len Wein and Kelley Jones - NerdSpan
Swamp Thing - Wikipedia
Review - Swamp Thing Winter Special #1: Len Wein Tribute - GeekDad
Roots of the Swamp Thing TPB (2011 DC) Signed by Len Wein – Collectors Crossroads
DC Comics Classic Library: Roots of the Swamp Thing | Len Wein
ABSOLUTE SWAMP THING By Len Wein and Bernie Wrightson – Buds Art Books
Wolverine, Swamp Thing creator dies
Convergence: Swamp Thing (2015) #1 by Len Wein | Goodreads
Absolute Swamp Thing by Len Wein & Bernie Wrightson New DC Comics HC Sealed | eBay