Painting: McCann's signature (in the lower right part) read by Stephen Gong
Although cannibalism is a famed aspect of the Donner history, it is not mentioned in this story.
Pencils/inks:
1) Crandall/Evans stated by Stephen Gong and original art dealer.
2) Orlando previously stated by original indexer.
Promo, with order coupon, for Classics Illustrated Special Issues. Several cover thumbnails.