| 201 | Uncanny X-Men, The | 1st appearance of Nathan Summers |
| 201/NS | Uncanny X-Men, The | 1st appearance of Nathan Summers |
| 105 | X-Men Classic | Reprints Uncanny X-Men #201; 1st appearance of Nathan Summers |
| 105/NS | X-Men Classic | Reprints Uncanny X-Men #201; 1st appearance of Nathan Summers |