In the 6th (and latest) volume of Twain's letters, at the foot of page
194, note 2, the editors identify the Opera House in Virginia City as
Maguire's; I, for reasons I cannot recall, thought it was Piper's.  Can
anyone out there clarify this for me?

I hate to point out the following, but on page 489 the Allan in Poe's
name appears as Allen.  It's not an uncommon mistake.

dennis eddings