X-Men Vs. Robots

This unpublished cover for X-Men 48 strikes me as being even more appealing than the published version.  The cover on the right has a bigger version of Marvel Girl.

The art comes from Richard Donnelly's gallery at comicartfans:

http://www.comicartfans.com/gallerypiece.asp?piece=100444&gsub=

And here's the published cover by Sal Busceman and John Romita Sr. for comparison:

Don Heck

Feast your eyes on the unpublished cover for X-Men #38 by Don Heck:

For your comparison, here is the original art for the published version by Dan Adkins:

On Comicartfans.com, Richard Donnelly credits John Romita Sr. with drawing (or perhaps redrawing) Marvel Girl on this cover:

http://www.comicartfans.com/GalleryPiece.asp?Piece=272713&GSub=42061

And here's the final published cover: