This issue has variants.
The on-sale date is the publication date reported in the U. S. Copyright Office filing.
An earlier indexer provided an on-sale date of November 9. No citation was given, although other indexers speculate that it may come from a listing in the fanzine The Comics Reader.
Marvel Comics Index #8A lists Gaspar Saladino as letterer.
Incorrectly credited to Frank Giacoia on item; Verpoorten credit from Nick Caputo. Credits list Frank Giacoia as inker.
The Swine seems visually inspired by John Lennon.