i think where ever you see a high elf on alliance, ingame, you can assume any number of additional high elves exist simultaneously, from 1 to 1000s. however, ion has stated the high elves of the alliance are being absorbed into the cultures where they live (et. al, perhaps its better stated when a high elf is seen, assume any number of additonal half elves exist simultaneously, from 1 to 1000s.)