On-sale date from copyright registration.
Pencils and inks credits by Craig Delich. We previously credited the pencils to Lew Sayre Schwartz, but he said he was not involved in this cover. We previously credited the inks to Charles Paris.
Lew Sayre Schwartz pencils credit removed, as he said he did not work on this story. Inks credit per Craig Delich; we previously credited Charles Paris.
Splash page replicates the cover. Story later adapted as part of Batman vs. 3 Villains of Doom (Signet, 1966 series), a prose novel.
Writer and letterer credits added by Craig Delich.
Pencil credit revised by Jerry Bails. Previously credited to Howard Sherman.