Pencil credits from Rich Donnelly via the GCD Errors List.
Sources for letters credit are The Marvel Comics Index (Olshevsky 1981), 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).
Continued in X-Men 23.
Letters from Walter Willis III, Walt Smith, Dean Crawford, Don Feese, A. George Resciniti, Dexter Musgrove, Christine Cassello, Jim Eastabrook, Francisco Cayse; M.M.M.S. entry form; "Next Ish" text.