- Script
- Bob Haney (credited)
- Pencils
- Alex Toth (credited as Alexander Toth)
- Inks
- Alex Toth (credited as Alexander Toth)
- Colors
- ?
- Letters
- ?; typeset
- Genre
- super-héroes (superhero)
- Characters
- Atom [Ray Palmer]; Flash [Barry Allen]; Iris West; Harry; Dr. Willis Stanton; Larnus (first appearance); Arbellice (first appearance); Zarn (first appearance); Attila-5 (first appearance, villain)
- Synopsis
- Flash and Atom must stop a microscopic world from expanding.
- Reprints