in X-Men Collector's Edition (Marvel UK, 1981 ? series) #[nn] (1981), #[nn] (1981)
in X-Men Classics Starring the X-Men (Marvel, 1983 series) #1 (December 1983)
in The Official Marvel Index to the X-Men (Marvel, 1987 series) #3 (September 1987)
in X-Men: Visionaries 2: The Neal Adams Collection (Marvel, 1996 series) #[nn] (1996)
in Marvel Masterworks: The X-Men (Marvel, 2003 series) #6 ([April] 2006)
in The X-Men Omnibus (Marvel, 2009 series) #2 ([April] 2011)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).
in Giant-Size X-Men (Marvel, 1975 series) #2 (1975)
in X-Men Collector's Edition (Marvel UK, 1981 ? series) #[nn] (1981)
in X-Men Classics Starring the X-Men (Marvel, 1983 series) #1 (December 1983)
in X-Men: Visionaries 2: The Neal Adams Collection (Marvel, 1996 series) #[nn] (1996)
in Marvel Masterworks: The X-Men (Marvel, 2003 series) #6 ([April] 2006)
in The X-Men Omnibus (Marvel, 2009 series) #2 ([April] 2011)
in The Cat (Marvel, 1972 series) #4 (June 1973)
in Giant-Size X-Men (Marvel, 1975 series) #1 ([July] 1975) [page 2 removed]
in The Titans Annual (World Distributors, 1976 series) #1977 (1976)
in Marvel Milestone Edition: Giant-Size X-Men #1 (Marvel, 1991 series) #[nn] (1991) [page 2 removed]
in Essential X-Men (Marvel, 1996 series) #1 (1996) [page 2 removed]
in Marvel Special (Marvel Italia, 1994 series) #14 (Luglio 1998) [page count uncertain]
in Marvel Masterworks: The X-Men (Marvel, 2003 series) #6 ([April] 2006)
in Women of Marvel: Celebrating Seven Decades Omnibus (Marvel, 2010 series) #[nn] (2010)
in The X-Men Omnibus (Marvel, 2009 series) #2 ([April] 2011)
in The X-Men Omnibus (Marvel, 2009 series) #2 ([April] 2011)