Sources for letters credit are The Marvel Comics Index (Olshevsky 1981), The Official Marvel Index to the X-Men (Olshevsky 1987), and The Official Marvel Index to the X-Men (Ward 1994).
Red Raven (last app. in RED RAVEN #1; last chron. app. in INVADERS #38; next app. in SUB-MARINER #26)
Sources for particularization of writing 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). Sources for particularization of pencils credits are The Official Marvel Index to the X-Men (1987) and The Official Marvel Index to the X-Men (1994).