Challengers of the Unknown #21
August-September 1961 · 0.10 USD · 36 pages
On sale 1961-06-13
Rated Approved by the Comics Code Authority
Credits
- Script
- Ed Herron, Dave Wood, Henry Boltinoff
- Pencils
- Bob Brown, Henry Boltinoff
- Inks
- Bob Brown, Henry Boltinoff
- Letters
- Ira Schnapp, Stan Starkman, Henry Boltinoff
- Editor
- Jack Schiff
- Associate editor
- Murray Boltinoff, George Kashdan
Notes
On-sale date from copyright registration.