.


[Linked Image from milehighcomics.com]
And here's a pretty cool cover Byrne did for Charleton's SPACE 1999 run, on issue 6.
https://readcomiconline.li/Comic/Space-1999/Issue-6?id=171754

Byrne did early art on issues 3-6, the last of which Byrne also scripted.
At which point Byrne was increasingly working only for Marvel, and at a better rate of pay.

As I recall, initially working on MARVEL PREMIERE 25, and then IRON FIST 1-15.
https://readcomiconline.li/Comic/Marvel-Premiere/Issue-25?id=49443
https://readcomiconline.li/Comic/Iron-Fist-1975/Issue-1?id=39862

And MARVEL TEAM-UP 53-55, and 59-70, and later 75, 79 and 100.
https://readcomiconline.li/Comic/Marvel-Team-Up-1972/Issue-53?id=34673

And just after he finished his IRON FIST run, Byrne did the first issue of his famous X-MEN run (issue 108, Dec 1977).
https://readcomiconline.li/Comic/Uncanny-X-Men-1963/Issue-108?id=22747