From the Walt Simonson's Facebook albums:
"X-Factor's original members. Pencil. 9.5 x 15. 1989??. Found this as I was rummaging around for something else. These are the pencils for the portraits of the characters that appeared in the X-Factor entry in the Official Handbook of the Marvel Universe. (Thanks to various folks who were able to identify the drawings, where I was clueless.