This oversized hardcover collects Marvel Super-Heroes (1967) 12-13; Captain Marvel (1968) 1, 34; Marvel Spotlight (1979) 1-2; and Marvel Graphic Novel #1: The Death of Captain Marvel.

From the publisher:

Celebrate the life and honor the death of one of the Marvel Universe's greatest heroes, as a classic tale is presented in the full cosmic scale of a Gallery Edition! The Kree warrior Mar-Vell has triumphed over foes large and small. But when he is diagnosed with cancer, Mar-Vell finds himself face-to-face with an enemy that even his vast might can't defeat -- and both he, and a universe that loves him, must rally together to accept the inevitable. The industry-changing graphic novel is presented alongside Mar-Vell's formative adventures, a portentous battle with Nitro, and Mar-Vell's budding romance with his true love Elysius! Guest-starring the Avengers, the X-Men, the Fantastic Four and more!