| Issue | #20 |
| Published | May 1969 |
| Cover Price | 0.25 USD |
| Pages | 68 |
| Editing | Roy Thomas |
| Genre | superhero |
| Pencils | Steve Ditko, Jack Kirby, Joe Sinnott, Larry Lieber |
| Inks | Steve Ditko, Jack Kirby, Joe Sinnott, Larry Lieber |
| Reprinted | from Amazing Spider-Man, The (Marvel, 1963 series) #25 (June 1965) |
| Genre | superhero |
| Script | Stan Lee |
| Pencils | Steve Ditko |
| Inks | Steve Ditko |
| Letters | Sam Rosen |
| Reprinted | from Amazing Spider-Man, The (Marvel, 1963 series) #25 (June 1965) |
| Characters | Thor; Grey Gargoyle [Paul Duval] (I)(O); Don Blake; Jane Foster; Paul Duval (I) |
| Genre | Superhero |
| Script | Stan Lee |
| Pencils | Jack Kirby |
| Inks | Chic Stone |
| Letters | Artie Simek |
| Editing | Stan Lee (Original Editor) |
| Notes | First appearance and origin of the Grey Gargoyle. |
| Reprinted | from Journey Into Mystery (Marvel, 1952 series) #107 (August 1964) |
| Genre | superhero |
| Script | Stan Lee |
| Pencils | Dick Ayers |
| Inks | Dick Ayers |
| Letters | Sam Rosen |
| Reprinted | from Strange Tales (Marvel, 1951 series) #118 (March 1964) |