An exhibit on Treasure Island history opens later this month in the Presidio. (Why the Presidio? Why not.) When we describe Treasure Island to our friends in other cities, we always have to add, "yes, that really is its name." To which they respond, "arrr." Ha ha. Anyway, check it out starting July 22 at the Presidio Officers' Club -- they have lots of dramatic photographs of "art, architecture, dramatic nighttime lighting and grand landscapes of the exposition and the public," all which would be perfectly suitable for display online, but then you wouldn't have to schlep out to the middle of nowhere.