Newton Comics' The Mighty Thor Giant 100 Page Annual was published in 1975* and reprints the main Thor features - not the backups - from Journey into Mystery #'s 113, 117, 120-123.
The cover is a recoloured reprint of Journey into Mystery #120:
The first story reprinted in this issue is A World Gone Mad! from Journey into Mystery #113. However, instead of beginning with the splash page to this story...
...the Newton reprint begins with a black and white reprint of the cover to Journey into Mystery #113:
Newton Comics published quite a few Thor stories from the Journey into Mystery run, mainly as backups in their The Amazing Spider-Man title, and in the two issues of The Mighty Thor which were published in 1976. A few also appeared in various one-shots and specials.