Swamp Thing First Appearance: House of Secrets #92 and How to Identify It

Swamp Thing first appeared in House of Secrets #92 (cover date 1971), published by DC, by Len Wein, Bernie Wrightson. The source puts it this way: "First Appearance: HOUSE OF SECRETS #92 (1971)".

• Cover art: this 1971 cover, drawn by Bernie Wrightson, depicts the first appearance of Swamp Thing.
• Creator credit: Bernie Wrightson co-created the iconic Swamp Thing character for DC Comics, alongside writer Len Wein.

• Indicia: the small print on the first page or inside cover gives the issue number, date and publisher; reprints usually say so there.
• Cover price and barcode: a price or barcode format that did not exist in the year printed means a later edition.
• Paper and staples: decades-old newsprint is tan at the edges; bright white pages on an old date are a warning sign.
• Restoration: color touch, trimmed edges and married covers are common on expensive keys; a grading service can detect them.

Shoot the front cover flat, straight on, in even light, then the indicia page and the back cover. Include the top edge and staples in one frame. The app reads the title, issue number and cover and matches it against the checks above; the indicia photo settles most reprint questions.