As a footnote to this very interesting discussion, I should point out
that regardless of when in 1968 this rehearsal took place, there
wasn't really an Alembic Studios. Now, its possible that the band was
calling their rehearsal hall Alembic Studios, but the enterprise known
on the backs of albums as 'Alembic Studios' did not open until 1971.
Alembic took over Pacific High Recorders at 60 Brady St in San
Francisco and re-named it Alembic Studios. In 1968, I don't think
there was an 'Alembic' entity except perhaps in Owsley's mind.
