If you look there have been a few main stream books that have published in smaller formates than 8.5 by 11. Those books from my knolege include a form a marvell and some others I cant think of now. In the next printing of marvell they switched the size I think they have more extenxive knoledge than I have.
Split from How important is page size? (http://www.indie-rpgs.com/viewtopic.php?t=9871)
Best,
Ron