X-Men # 16 Splash

A great example where Jack is credited as the layout artist, but you can still see his unique style in the image.

Looking through the rest of the story, Werner Roth (Jay Gavin) injects his own style into the the artwork — understandable because Jack probably provided fairly loose layouts for interior pages — but in certain panels such as this one (page 3, panel 3) you can still clearly see Jack’s dynamics at work in the composition of the image.