- Script
- Jim Shooter
- Pencils
- Jim Shooter (layouts only); Curt Swan
- Inks
- George Klein
- Colors
- ?
- Letters
- Milt Snapinn
- Genre
- superhero
- Characters
- Legion of Super-Heroes [Superboy; Cosmic Boy; Princess Projectra; Sun Boy; Ferro Lad]; Fatal Five [Tharok; Mano; Emerald Empress; Persuader; Validus]
- Synopsis
- The heroes and villains prepare to confront the Sun-Eater, while Tharok plans for the aftermath.
- Reprints
Story continues from previous issue.
- Script
- Jack Schiff ?
- Colors
- ?
- Letters
- Ira Schnapp
- Genre
- non-fiction; advocacy
- Synopsis
- the words "peace on earth" translated into several languages
published in cooperation with the National Social Welfare Assembly
- Script
- ?
- Pencils
- Curt Swan
- Inks
- George Klein
- Colors
- ?
- Letters
- typeset
Letters from: Tom Shields, Jay Burdick, Norm Nichols, Dave Olsen, David Luhn, Jack Jodell, Elizabeth Kane (two letters), Violet Smith, Irene Vartanoff, Gene Comeau, M. Shelby Silver, and A. C. Bethune.
Credit is given to 14-year old Jim Shooter for issue #349 (it's mentioned that he just turned 15), and to E. Nelson Bridwell for issue #351.
- Script
- Irwin Donenfeld
- Letters
- typeset
Date of Filing: October 1st, 1966. Total Paid Circulation, Average for 12 months: 481,234, for issue nearest to filing date: 522,096