I was in the middle of reading the last issue in this collection this afternoon when I learned that Stan Lee had passed. Excelsior, sir.
BRING ON THE BAD GUYS: Dr. Doom returns with one of his sillier schemes (his Master Plan, no less), in which he overpowers three average criminals to ensnare the FF. The Mole Man makes his first reappearance since the FF's first issue with a plot to lower the world's cities into subterranea via giant-sized hydraulics. The Mad Thinker and the Puppet Master return and team up, withe the former managing to overlook a very obvious possible pitfall in his genius plan. And the FF meet (and accidentally free from century-long imprisonment) Diablo, whose Transylvanian alchemy manages to tempt the Think away from his partners. And, of course, the Yancy Street Gang goes down in history as one of the team's bitterest enemies by dropping hot garbage on Ben Grimm's head. All this and Hitler too.
LADYWATCH: Sue Storm continues to be more frivolous a presence than her later character development supports. In one memorable moment, she's interrupted in that most All-American pastime of trying on a plethora of wigs alone in her bedroom. But there are hints of a deeper characters here, as she demonstrates spunk and inventiveness in a number of battles, and displays a variety of reactions to the peril of various men in her life (not just mooning after Reed, but expressing sisterly concern for brother Johnny, as well as demonstrating good insight into Ben and Alicia's star-crossed relationship). What's more, Stan and Jack allow her powers to increase, probably in direct reaction to readers' criticisms about the efficacy of invisibility as a superhuman ability; now she can project invisible force fields and turn other objects invisible, though doing so requires greater concentration than, say, Johnny's flame power. She also gets to offer what is perhaps the most nuanced and human emotional response to a personal conflict I've yet seen in a Marvel comic: in an otherwise fairly ridiculous story in which Reed and Namor are fighting over her like a couple of rhinos in heat, Sue puts a stop to the battle and drops some hard truth on the Sub-Mariner--"I'm sorry, Namor! Sorry if you misunderstood the sympathy I felt for you--yes, even the affection I felt...Sorry if you thought it was love! But I realize now--Reed is the only man for me...Nothing can ever change that!" Prince Namor MacKenzie, Imperius Rex, and first anti-hero banished to the Friendzone.
COSMIC ENCOUNTERS: The Watcher returns in the course of another run-in with the Red Ghost, and he takes a minute to humblebrag about all the advanced tech in his pad that so cool, even he doesn't know what they all do. Plus, the FF face the Infant Terrible, an interstellar toddler who ends up on Earth somehow and wreaks havoc with his incredible reality-bending powers and his ridiculous, if faintly adorable, character design. E.T. phone home, with a little help from Reed Richards.
HOSTS OF HOGGOTH: Dr. Strange makes an appearance, using his magic to help the team track down Namor, and invoking all the Vishantis and Dormammus he can utter. Diablo's alchemical "magic" turns out to be so much poppycock.
SUPERHERO TEAMUP: This one has it all! The Avengers! The X-Men! Hulk! Namor! Dr. Strange! There's a slight sense of professional conviviality between the FF and Earth's Mightiest, and, after the obligatory hero fight, the FF have a heart-warming moment where they say of the X-Men, basically, that those kids will be going places. If they only knew. Incidentally, this collection ALMOST features the first meet-up between future Defenders teammates Dr. Strange and Namor, though the two are technically never mutually aware of each other's existence in the issue in which they both appear.
CONTINUITY NOTES: You start to get a sense of the knit-together fabric of the Marvel Universe, though it's fairly implicit, as though Stan and Jack WANT to be constant cross-promotors, but don't want to go whole-hog for fear of alienating readers. FF #25-26 essentially continue from Avengers #1-4, forming, in a way, the first multi-issue, multi-title comics crossover. Stan seems to begin to realize his characters might last for more than a few years, and begins making reference to past events in vague "months ago" terms, tightening up the internal timeline in a canny way, heading off reader criticism that the heroes never seem to age. (It's months and years for us real people, but usually only days and weeks for the characters.) When discussing the catalog of the X-Men's exploits (in convenient order of publication history), the FF mistakenly swap out the mutants' teleporting second issue baddie, the Vanisher, with the Avengers' teleporting second issue baddie, the Space Phantom (it must have been hard on Stan and Jack to keep all those weirdos straight). It's unclear how anyone in the outside world could have heard of some of the X-Men's exploits, particularly their battle with the Blob, wherein the whole point was that the team brought the new mutant home to their mansion and then had to wipe his memory of the experience before he could reveal the location of their HQ--an explicitly private affair. (Nor, for that matter, is it clear how the Puppet Master could create a puppet that only vaguely resembles Professor X that still works to control his will, but then never tries to replicate the feat with the powerful telepath or any other useful being.)