Banner in masthead similar to the one that would become the standard design on Marvel with the November 1971 issues (with similar banners turning up on DC Comics, Atlas Comics & Archie Comics).
In the introduction to Marvel Masterworks: Nick Fury Agent of Shield Volume 2 Steranko says he took over the color chores with Strange Tales # 165. Part 6 of 9. Fury comments that no amount of attempted brainwashing could ever force Sitwell to turn bad as "it's against his principles". Last episode of this storyline reprinted in the 1970's; fans would have to wait until 2000 to read a reprint of the rest of the story!
Part 9 of 22; part 5 of Umar sequence. Clea's 1st appearance on Earth (if only briefly).