Mariposa Military Base

The Mariposa Military Base was supposedly an Enclave base before the war, hiding scientists working on the Forced Evolutionary Virus until there there was some sort of schism. Some of the some scientists killed themselves - realizing their horrible failure and that F.E.V. was 'evil' - and rebel factions that broke up from the base formed the Brotherhood of Steel, took material and men and went south to form their own 'Enclave' (or rather Conclave), although THAT can still be speculated on...

Fallout

 * FEV Experiment Disk
 * FEV Research
 * West Tech Records

Fallout 2

 * Military Base Outside
 * Military Base Level 1
 * Military Base Level 2
 * Military Base Level 3
 * Military Base Level 4