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 October 12. 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.
Letters from Steve Farinelli, Mike Cannon, Steve Krueger, Philip A. Gladstone, Rob Allstetter, Doug Quarnstrom, Charles Webb