Collects Avengers (1963) #69-79. You know it's trouble when Kang the Conqueror drops in from the 41st century, but this time he pits our heroes against Hyperion, Nighthawk, Dr. Spectrum and the Whizzer - the Squadron Sinister - in a cosmic chess match! And as if one menace wasn't enough, then from across time the Avengers must also face the combined combat skill of the Captain America, Sub-Mariner and Human Torch of 1941! Next, it's a focus on the King of Wakanda, the Black Panther, as he infiltrates the supremacist Sons of the Serpent. But when he's captured, will the Serpents use T'Challa to incite a war that will tear the nation apart? Then it's the return of Quicksilver and the Scarlet Witch, but with them in two comes a barbarian as only Big John Buscema can draw them, Akron the Magnificent! And before you close these pages you'll find out how to rent an Avenger when they become heroes for hire, see the return of the Man-Ape and the Lethal Legion, and enjoy guest-stars galore with the Black Knight, Nick Fury, Captain Marvel and Black Widow!

Collects Avengers (1963) #110-111, Incredible Hulk #172, 180 & 181, Captain America #172-175, Marvel Team-Up #23 & 38, Defenders #15-16 and Giant-Size Fantastic Four #4. The culmination of the Silver Age legacy of Marvel's mutant misfits, the X-Men! Closing the gap between the end of the X-Men's original series in 1970 and the debut of the All-New, All-Different team in 1975, the Marvel Masterworks present several X-Men tales that set the stage for Giant-Size X-Men #1! First up: Forced underground by anti-mutant hysteria run amok, the X-Men find themselves pursued by a secret adversary that seeks to pick them off one by one. And if being on the run wasn't tough enough, here comes Magneto! Only the combined might of the X-Men and the Avengers can prevent the Master of Magnetism from unleashing a nuclear holocaust. Then, with the X-Men's ranks dwindling, Professor X, Cyclops and Marvel Girl head West for reinforcements, but instead bump into the Incredible Hulk and the Juggernaut. (Ouch!) Next comes the culmination of the classic Secret Empire saga, where the X-Men find they share a common enemy with Captain America and join forces with the shield-slingin' Avenger to save the nation and rescue their mutant comrades. Then, on the eve of the X-Men's departure to face Krakoa the Living Island, Iceman and the Human Torch team-up to battle Equinox, the Thermo-Dynamic Man-and with his team missing, Professor X must enlist the Defenders to fight a resurgent Magneto and Alpha, the Ultimate Mutant! To top it all off, we've also included X-Man-to-be Wolverine's very first appearance! The ol' Canucklehead leaps from the top-secret Weapon X program and throws down in his first famous battle with the Incredible Hulk. It's the all-time classic that made comic book history! There's also the debut of Madrox the Multiple Man-Chris Claremont's first X-Man-and the Beast vs. the Griffin. This X-tra special Masterworks volume polishes off the library of every X-Fan's dreams-completing the original adventures of Marvel's most-famous super team!

Collects Sub-Mariner (1968) #61-72; Marvel Spotlight (1971) #27. The Sub-Mariner’s royal bearing and tempestuous attitude have made him a lightning rod for action and excitement since day one. The adventures in store for you here — completing the Sub-Mariner’s original MARVEL AGE series — will be no exception to the rule. It begins when Dr. Hydro’s human-amphibian hybrids attack Atlantis. Namor wins the day, but his people oppose him after he takes in the outcast army. Then, a nerve gas explosion leaves Namor crippled and unable to defend his realm from Orca and an upstart kingdom. Reed Richards will craft a new costume to help him fight again, but nothing will be able to contain the rage of the Savage Sub-Mariner! Also featuring “Tales of Atlantis,” a backup feature exploring the legends of Atlantis!

Collects Avengers #120-128, Captain Marvel (1968) #33, Giant-Size Avengers (1974) #1, Fantastic Four #150. Earth's Mightiest Heroes begin to unravel the origin of Mantis in their latest Masterworks extravaganza! An all-hands-on-deck battle with the Zodiac takes the Avengers to the stars and into the jungles of Vietnam before Mantis' surprise connection to the criminal gang is revealed. Then, the team lends their might to Captain Marvel's fight against Thanos and his Cosmic Cube! Next, Roy Thomas returns for a Giant-Size adventure including Golden Age heroes Miss America and the revelation about Quicksilver and the Scarlet Witch's origins.

Collects Avengers (1963) #178-188, Annual (1967) #8-9, Marvel Premiere (1972) #49 and material from Marvel Tales (1966) #100. Avengers Mansion is running out of room, so the old order changeth! Government agent Henry Peter Gyrich is kicking out all but seven Avengers. Despite their protests, the team won’t have time to argue — because a mysterious man from Quicksilver and the Scarlet Witch’s past has emerged, kicking off an adventure that leads the Avengers to Wundagore Mountain and reveals the answer to one of Marvel’s oldest mysteries! But first, the Absorbing Man shows up for a good ol’ fashioned knuckle-crunching battle! Also featuring a trip to the Inhumans’ Great Refuge, an all-new Doctor Spectrum in a story illustrated by George Pérez, solo Beast and Falcon adventures and the massive mountain-menace Monolith! Brought to you by Avengers greats David Michelinie and John Byrne!

Collects Avengers (1963) #112-119, Defenders (1972) #9-11. Earth’s Mightiest Heroes fight one of the greatest battles in super-hero history! It’s hero against hero in the sensational summer hit of 1973: the “Avengers/Defenders War.” Cap vs. Namor! Thor vs. Hulk! It’s the original crossover clash, and there’s never been another one like it. But first, there are even more trendsetting classics in store for you: Mantis makes her debut; the Lion God brings the Avengers to their knees; Vision and the Scarlet Witch’s relationship blossoms, but not without the intolerant objections of others; and the Swordsman joins the ranks of the Avengers.

Gathering together to face the evil Loki, Iron Man, the Incredible Hulk, Ant-Man, the Wasp, and the Mighty Thor formed the improbable core of the ever-changing super-team. And from the ice of the northern Atlantic, Captain America returned from the frozen depths that the Avengers truly took form. Illustrated by Jack Kirby and Don Heck, and written by Stan "The Man" Lee, you'll find the first appearances of Kang the Conqueror, Wonder Man, the Space Phantom and Baron Zemo, the debut of the Masters of Evil and the Hulk's departure from the team, and subsequent battle with the Sub-Mariner vs. the Avengers. Collecting Avengers (1963) #1-10.

Collecting Doctor Strange (1974) #38-46; What If? (1977) #18; Marvel Fanfare (1982) #5. Celebrated writer Chris Claremont turns his magic toward the Master of the Mystic Arts: Doctor Strange! Joined by artistic icon Gene Colan, there's no doubt that the Doctor is in! Together, these creative giants return Baron Mordo to the fore, arming him with the occult secrets of the Vatican and testing Doctor Strange's mystic might. Then, Wong is captured by the Shadowqueen, and Clea and Strange must traverse dimensions and battle the demonic N'Garai to save him! Also featuring a Claremont/Marshall Rogers masterpiece; an alternate world where Doctor Strange is a disciple of the Dread Dormammu; and the1980 all-Doctor Strange Marvel Comics Calendar, illustrated by an amazing array of top artists from Frank Miller to John Byrne!

Collects Avengers (1963) #51-58 and Annual #2, X-Men (1963) #45. Take a trip through one of the most stellar creative periods in Avengers’ history! The Black Panther joins the team, the Avengers fight the X-Men, a new Masters of Evil debuts, the story of Bucky Barnes’ tragic death is told in full for the first time, the new Avengers and the original Avengers face off in a reality-bending battle — and don’t forget the first appearance of Ultron! Plus, one of the most famous stories in all of Marveldom: the Vision’s debut in “Even an Android Can Cry.”

Collects Avengers (1963) #217-226, Annual (1967) #11; Vision and the Scarlet Witch (1982) #1-4; material from Marvel Fanfare (1982) #3. Avengers storytelling doesn't get much more dramatic than the tales in this Marvel Masterworks as the disgraced Yellowjacket reaches rock bottom! Meanwhile, Earth's Mightiest Heroes join the Defenders to take on Nebula, and then team with Drax the Destroyer in battle against - Thor and Moondragon?! Two new members join the team (spoiler: it's She-Hulk and Hawkeye!), and the blustery bowman gets right into the action in a classic team-up with Scott Lang, the Ant-Man, against the Taskmaster! And the Black Knight shows up for a stirring two-part tale! Capping off this volume is the classic VISION AND THE SCARLET WITCH limited series, in which Vizh and Wanda's attempts at suburban bliss are rocked by deep revelations - including the identity of Wanda's father!