Variants & other printings
ASTONISHING TALES #21
Volume 1 · 1970-1976
- Published
- December 1973
- Cover price
- $0.20 USD
- Edition
- —
- Era
- Bronze
- UPC
- LORD SILVERBACK Contact
- Key issue
- No
Creators
- Writer
- Tony Isabella
- Penciler
- Richard Ayers 'Dick', Steve Ditko
- Inker
- Richard Ayers 'Dick'
- Letterer
- Richard Ayers 'Dick'
- Cover artist
- Gil Kane
- Editor
- Roy Thomas
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