After looking at hundreds of comic book covers, it becomes quickly apparent that not every cover is 100% original. Whether done intentionally or even underhandedly, there's something about uncovering these "swipes" that adds a new element of fun to reading and collecting comics. This swipe inserts Swamp Thing's wife into the famous cover from his 1st appearance.
House of Secrets #92 House of Secrets #92
July 1971
Bernie Wrightson
 the Saga of the Swamp Thing #33 the Saga of the Swamp Thing #33
February 1985
John Totleben
On Ebay: Swamp Thing On AtomicAvenue: Swamp Thing