A few stories take place during X 138.
CYCLOPS II/SCOTT SUMMERS
…
X 137
*X 138 (1-15)
UX 429
ASM2 57
ASM2 58
ASM 500
[XU 49]
*X 138 (16-23)
X 139
…
WOLVERINE/"LOGAN"/JAMES HOWLETT
…
X 137
*X 138 (1-15)
UX 429
UX 430
UX 431
UX 432
UX 433
UX 434
*X 138 (16-23)
X 139
…
XORN/KUAN-YIN XORN
…
X 137
*X 138 (1-15)
UX 430
*X 138 (16-23)
X 140
…