As a long time X-Men fan it has been immensely fun to finally read the first stories involving Marvel's merry mutants and certainly more than interesting to see what has changed over the years. Most notably, the key element to mutants starting to pop up being radiation causing mutation in unborn children (rather than the more pure genetic strands that's been relied on much later on). As such it once again lends credence to the notion that the Marvel Universe (much, MUCH more so than DC's) originates from excess doses of radiation, obviously relating to the fears and concerns of its time.
This volume introduces the Brotherhood of Evil Mutants and a Magneto who hardly resembles Claremont's later on redeemed headmaster of Xavier's school one iota, the Blob, Unus the Untouchable, the Stranger, Ka-Zar and the Savage Land, the Mimic, the Juggernaut, Dr. Trask's Sentinels and the Master Mold, and many others.
Not forgetting to mention, of course, "The Most Mysterious Fighting Team of All Time!"Cyclops, Angel, Beast, Iceman and Marvel Girl.
Warmly recommended for fans of 60s' Marvel, X-Men and good, fun superhero action-drama all around!
eBook Essential Classic X-Men, Vol. 1