Low $40
 | 
Mid $110
 | 
High $430
  • 1st appearance and origin of The Swamp Thing, Alec Holland
  • 1st cameo appearance of Anton Arcane
  • 1st appearance of Matt Cable, later becomes the Sandman's raven
  • 1st appearance of Nathan Ellery, the man who caused the explosion that created Swamp Thing
  • 1st ongoing Swamp Thing solo title
Details
Publisher DC
Published October 1972
Written By Len Wein
Illustrated By Bernie Wrightson