in Fantastic! (IPC, 1967 series) #40 (18 November 1967)
in The X-Men (Marvel, 1963 series) #72 (October 1971)
in Marvel Masterworks: The X-Men (Marvel, 2003 series) #7 [Regular Edition] ([October] 2008)
in Essential Classic X-Men (Marvel, 2006 series) #3 [black & white]
in The Official Marvel Index to the X-Men (Marvel, 1987 series) #1 (May 1987)
in Marvel Masterworks (Marvel, 1987 series) #7 ([Novenber] 1988)
in Essential Uncanny X-Men (Marvel, 1999 series) #1 (September 1999)
in The X-Men Omnibus (Marvel, 2009 series) #1 ([April] 2009)Disputed penciler and inker credits; Werner Roth pencils with Dick Ayers inks per Carl Gafford and Nick Caputo; Werner Roth pencils and inks per Steve Whitaker.Original indexer cited Jack Kirby as layout artist.
in The X-Men (Marvel, 1963 series) #72 (October 1971)
in Marvel Masterworks (Marvel, 1987 series) #7 ([Novenber] 1988)
in Marvel Special (Marvel Italia, 1994 series) #8 (Agosto 1996)
in Essential Uncanny X-Men (Marvel, 1999 series) #1 (September 1999)
in The X-Men Omnibus (Marvel, 2009 series) #1 ([April] 2009)
in The X-Men Omnibus (Marvel, 2009 series) #1 ([April] 2009)Letters from John Keppler, Gordon Flagg, Syd Terry, Bill Tipton, Guy Michael, Fred Waiss, Charles McClain, Lewis Torro, Laura Lindh and Ken Chew with accompanying illustrations.