"Hidden America" is a phrase used by those who fancy themselves archeologists of a American unseen by most eyes -- the kinds of people who quote Elijah Snow of Planetary in their signature files. Five years ago it was Fox Mulder. Some of them actually know things -- look at BenSiegel.

UnknownUSAWeb is a popular online hangout for such archeologists.

It occurred to me well after we had established "UnknownUSA" as the name of this campaign that we could have called it "Unearthed Americana," both for the UA acronym and as a riff on the old AD&D book. But I like the "arcane travel guide" sound of "Unknown USA" too. [Rob]