Check out http://www.outofprintclothing.com/ . They are semi-new clothing brand using out of print book covers as tshirt designs. Great idea (wish I had thought of it:) ). Pricey, $28 per tee, but not ridiculous for a limited, printed, cool vintage looking/feeling tee. They have Mens, Womens and Kidies!
Below are just a few I immediately was drawn to. But def check out the site, and support small tshirt companies...and books...and reading