[quote=WittyReference]
True enough though I'd imagine they'd be more legends and story books by now. I always figured the Mariposa Super Mutants who still wander around were stragglers when the Vats went boom. Without a specific anchor, they'd have either come back West or continued East surely.
[/quote]

Or settled down like at Jacobstown.

There's a few very intelligent mutants in the first generation bunch. Like for Jacobstown they may have settled down somewhere in the Sierra Nevada maybe, or in some ruins and spend their time herding other lost mutants towards them. With civilization sprouting up in Nevada too there's a possibility that the intelligent muties may see signs that threaten them and move out, taking who they can.

If Jacobstown isn't steamrolled by robots, Marcus could have just as well took everyone out and away at a sign of trouble. He's not a character who would want it.