Roger Sweet's book:
http://www.ebay.com/itm/Mastering-The-Universe-He-Man-And-The-Rise-And-Fall-Of-A-Billion-Dollar-Idea-/290714006523?pt=US_Action_Figures&hash=item43afe7b3fb#ht_500wt_898

King Of Castle Grayskull:
http://www.ebay.com/itm/He-Man-Masters-Of-The-Universe-mini-comic-King-Of-Castle-Grayskull-w-out-burst-/300712195280?pt=US_Action_Figures&hash=item4603d7f4d0#ht_500wt_898

Battle In The Clouds:
http://www.ebay.com/itm/He-Man-Masters-Of-The-Universe-mini-comic-Battle-In-The-Clouds-w-out-burst-/300712197742?pt=US_Action_Figures&hash=item4603d7fe6e#ht_500wt_898