Swamp Thing #1: Facsimile Edition — DC Comics
Issue: #1 B
While working on a restorative formula (that can make forests out of deserts) in the Louisiana swamps, scientist Alec Holland is killed by a bomb set off by Mr. E., who wants the formula. Shortly thereafter, a humanoid plant being rises from the swamp, created from the body of Holland, the chemicals in the formula, and the strange forces in the swamp.
Creators: Len Wein, Bernie Wrightson, Gaspar Saladino, E. Nelson Bridwell, Joe Orlando
Characters: Swamp Thing, Linda Holland, Matthew Cable, Nathan Ellery