ON THE SPINNER RACKS June/July 1970

 Cover by Neal Adams and John Verpoorten.
Interior art by Kirby and Colletta.

Even though he is not on the cover, Loki makes his 51st  appearance.

Thor's 147th appearance             .

Sif's 35th.   

Thor is not on the cover of AVENGERS #79 but he does appear on the splash page and 4 panels.