Sturm und Drang

From Stormantic, here's a sketch of Storm, Phoenix, and Lockheed by John Romita Jr.

Dazzler as Grace Jones by John Romita Jr.

According to Wikipedia:

"Dazzler was originally a project commissioned by Casablanca Records in the mid-to-late 1970s to be a cross-promotion in the mold of KISS, who had two successful comic book tie-in super-specials by the end of 1977. Marvel Comics would develop a singing superhero, while Casablanca would produce a singer. The two companies would then work with Filmworks and produce a tie-in motion picture; Marvel Comics Editor-in-Chief Jim Shooter wrote a treatment for the project.

The character was originally conceptualized as "The Disco Queen" with the power to make people tell the truth. Initially, no one wanted anything to do with the project. Marvel Comics appointed former Archie Comics writer Tom DeFalco to the character and he developed some changes to the character, namely suggesting light-based powers. Roger Stern conceived of the character's name, Dazzler, while John Romita, Jr. provided pencils."

"Artist John Romita, Jr. originally intended for the character to resemble model, actress, and singer Grace Jones, as seen in early depictions.However, representatives from Filmworks – wanting to promote model and actress Bo Derek – insisted on design changes to reflect Derek's features.

To promote Dazzler, Casablanca wanted it cross-promoted within several key Marvel Comics titles: The X-Men, The Fantastic Four, and Spider-Man in particular[citation needed], with Dazzler debuting in The Uncanny X-Men because she was a mutant character. However, Casablanca continued to request conceptual changes to the character's appearance and personality, leading to several cancellations of the project. Eventually, Casablanca Records backed out of the Dazzler project altogether due to financial concerns. Marvel Comics, left with a much-publicized new character, decided to launch the project as a monthly series.

According to writer Tom DeFalco, Dazzler was canceled "five or six times" prior to its launch in March 1981. At the time, Marvel Comics was looking for other filmmakers to invest in a Dazzler cross-promotion. However, Jim Shooter and Stan Lee decided to launch the series without such a partnership because of their "faith in the character.""

John Romita Jr. Week

I don't want to speculate as to what this image was produced for.  I don't even know that it's unpublished - but it's a very nice rendition of the X-Men.  This may be the only time I've seen John Romita Jr. ink his own work, and there's something about his shading here that I like.

More Uncanny JRjr

Here is another cover from John Romita Jr's second run on Uncanny X-Men.  It appears to be labeled for issue #316, however his last published issue was #311. This art was later printed in Uncanny X-Men Annual #18.

The Uncanny JR jr

Gaze in amazement at this unused cover by John Romita Jr.

Some would argue that it is an improvement over the one that was actually used for Uncanny X-Men 310.