- Arnold Drake
- Don Heck (breakdowns); Werner Roth (uncredited)
- Vince Colletta
- Jean Izzo [née Jean Simek]
- X-Men [Angel; Beast; Cyclops; Iceman; Marvel Girl]; Alex Summers [Havok] (intro, origin); The Living Pharaoh [Prof. Abdol] (intro)
Sources for particularization of pencils credits are The Official Marvel Index to the X-Men (Olshevsky 1987), The Official Marvel Index to the X-Men (Ward 1994), and Official Index to the Marvel Universe (Vandal et al. 2009).
Includes a letter from Bob Wiacek
Total No. Copies Printed (net press run): Average no. copies each issue during preceding 12 months: 415,200.