Cover is altered from original: backgrounds have been changed, the Watcher figure was moved and the FF figures were enlarged.
Thing image taken from an issue of Fantastic Four.
A Marvel Masterwork Pin-Up. Medusa illustration by Barry Smith is likely an original printed for the first time in this issue.
Dr. Strange art taken from the tee-shirt, which in turn was an amalgamation of figures from Strange Tales # 127 and 129. Vignettes added from various issues of Strange Tales.