This issue is a variant of The Saga of Swamp Thing (DC, 1982 series) #6 [Direct Sales]. There exist further variants.
On-sale date from The Comic Reader #203.
Casey Clancy's real name revealed as Karen Clancy.
Letters of comment from readers "T. M. Maple", Chris Padovano, Kent A. Phenis, Steve Lambey, Ron Tuscany, Jeff Albrecht, and William Bittermann.
Reader suggestions for the letter column name from Craig Larson, Wallace Hopkins, and Peter Petruski.