in Los Increíbles Hombres X, Uncanny X-Men (Editorial Televisa, 2009 series) #21 (Diciembre 6, 2010) [cover]
in Essential X-Men (Panini UK, 2010 series) #21Cover sports Nation X trade dress.
Presents full page cover art for next issue.
Statement of Ownership: Average # of copies in preceding 12 months: 97,112. Actual # of copies closest to filing date: 21,833.