| Issue | #254 |
| Published | December 1976 |
| Cover Price | 0.30 USD |
| Pages | 36 |
| Editing | Stan Lee |
| Characters | Thor; Dr. Donald Blake; Odin |
| Genre | superhero; fantasy |
| Pencils | Rich Buckler |
| Inks | Joe Sinnott |
| Notes | Buckler cover credit provided 2006 by Nick Caputo. Previous indexer credited John Buscema. |
| Characters | Thor; Don Blake (origin); Heimdall; Odin; Storm Giants of Niffelheim; Balder; Warriors Three [Hogun; Fandral; Volstagg]; Gondolff (first appearance) |
| Synopsis | Origin of Don Blake. |
| Genre | Superhero; Fantasy |
| Script | Stan Lee |
| Pencils | Jack Kirby |
| Inks | Vince Colletta |
| Letters | Sam Rosen |
| Notes | Pages 3 and 14 of the original story are not reprinted. Origin of Don Blake continued, first appearance of Gondolff. |
| Reprinted | from Thor (Marvel, 1966 series) #159 (December 1968) [-2 pages] |