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 January 11, 1976. 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. Previous indexer listed John Costanza as letterer.
Pages 1-3 appear to be inked by Frank Giacoia; the rest by John Verpoorten. Info per Nick Caputo, August 2012.