1983 - Anatomy of a Cover - Uncanny X-Men #175

By Paul Smith.

http://paulmartinsmith.com/content/uncanny-x-men-175-cover-november-1983

1984 - Paul Smith's pencils for Uncanny X-Men #175

Found over at the Paul Smith Appreciation Page on Facebook:

 

Thanks to Ferran for the scan. The pencils were published in Mavel Age #10.

Uncanny X-Men #175 recreation by Arthur Adams

Grabbed from the Fans of Arthur Adams facebook page, here's Adams' recreation of Uncanny X-Men #175, originally by Paul Smith.