| Issue | #4 |
| Published | 1991 |
| Cover Price | 5.95 USD |
| Pages | 84 |
| Editing | Robert Susor |
| Genre | Science Fiction |
| Pencils | Alden McWilliams |
| Inks | Alden McWilliams |
| Letters | Typeset |
| Pencils | Alden McWilliams |
| Inks | Alden McWilliams |
| Letters | Typeset |
| Notes | House ad for Twin Earths Sunday Pages #2 |
| Script | Robert Susor |
| Letters | Typeset |
| Script | Robert Susor |
| Pencils | Alden McWilliams |
| Inks | Alden McWilliams |
| Letters | ?; Typeset |
| Notes | Reprint of advertisement from the Minneapolis Morning Tribune newspaper, promoting the arrival of the Twin Earths comic strip. |
| Genre | Science Fiction |
| Script | Oskar Lebeck |
| Pencils | Alden McWilliams |
| Inks | Alden McWilliams |
| Reprinted | from Twin Earths daily (United Features Syndicate) 30.05.1955 - 05.05.1956 |
| Letters | Typeset |
| Notes | 2 page advertisement for newspaper strip collections offered through Tony Raiola's Pacific Comics Club. |
| Pencils | Alden McWilliams |
| Inks | Alden McWilliams |
| Letters | Typeset |
| Notes | Advertisement for Twin Earths T-Shirts and Sweat Shirts. |
| Pencils | Alden McWilliams |
| Inks | Alden McWilliams |
| Letters | Typeset |
| Notes | Reprint of a 1957 United Features advertisement in Editor & Publisher magazine promoting five and a half years of the Twin Earths strip. |
| Pencils | Alden McWilliams |
| Inks | Alden McWilliams |
| Letters | Typeset |
| Reprinted | Advertisement for Twin Earths back issues. |