- Script
- John Broome
- Pencils
- Carmine Infantino
- Inks
- Joe Giella
- Colors
- ?
- Letters
- ?
- Genre
- superhero
- Characters
- Flash [Barry Allen]; Iris West; Rita (future Mrs. Desmond, introduction); Reverse-Flash [aka Professor Zoom; Eobard Thawne]; Mr. Element [Al Desmond]
- Reprints
Story across 24 pages in three parts of 6.67 pages, 10.67 pages, and 5.67 pages.
- Script
- ?
- Pencils
- ?
- Inks
- ?
- Colors
- ?
- Letters
- ?
- First Line of Dialogue or Text
- Every 9 hours, 55 minutes Jupiter rotates...
- Genre
- non-fiction; math & science
- Reprints
On the page immediately preceding page 8 of the main story sequence.
- Script
- ?
- Letters
- typeset
Letters from T. Gleeson, Mike Murano, Richard Light, Marjorie & Elsa Johnson, and Howard D. O'Leary.