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).
Neal Adams was credited with inks in The Marvel Comics Index, The Official Marvel Index to the X-Men (1987), The Official Marvel Index to the X-Men (1994), and Official Index to the Marvel Universe (Vandal et al. 2009).
Letters by Edward Lynn, Reid F. Edwards, Edward Newsom, Capt. F.K. Corey and Ken Miller.