| Issue | #20 |
| Published | September 1974 |
| Cover Price | 0.25 |
| Pages | 36 |
| Notes | Cover information provided 2006 by Nick Caputo. |
| Genre | superhero |
| Pencils | Don Heck |
| Inks | Frank Giacoia; John Romita |
| Colors | John Romita? |
| Notes | Cover information provided 2006 by Nick Caputo. |
| Reprinted | from Avengers, The (Marvel, 1963 series) #26 [Reworked, with additional Romita material added] |
| Characters | Vs. Attuma the Atlantean. |
| Genre | superhero |
| Script | Stan Lee |
| Pencils | Don Heck |
| Inks | Frank Giacoia (as Frank Ray) |
| Letters | Artie Simek |
| Notes | Continued next issue. |
| Reprinted | from Avengers, The (Marvel, 1963 series) #26 (March 1966) |