Group picture?

Can anyone help with an excellent and appropriate image to put on this group's profile? I don't have anything that's not the standard picture of a stack of books or row of bookshelves, and was looking for something more unique. :)

http://en.wikipedia.org/wiki/Boy_surface

torus.math.uiuc.edu/.../MathArt/Klein/kl4.jpg

Take your pick. :)

Oh, and uniqueness is an absolute, not a relative term.

Not unique, and probably not exactly applicable to our "books on books" group, but I'm a big fan of Arcimboldo's "The Librarian" (http://commons.wikimedia.org/wiki/Image:Arcimboldo_Librarian_Stokholm.jpg), who is "made" of books ...

How about this one:

http://www.nearingzero.net/screen_res/nz146.jpg

You know, I think the standard stack 'o book / bookshelf would be better than nothing. You could use it as a filler until you find something better.