http://www.mysanantonio.com/default/article/Library-visits-enter-future-at-BiblioTech-4814924.php,
http://abclocal.go.com/ktrk/story?section=news/state&id=9249333
It might be a good idea to still have physical library books as a backup. Sure, its nice to carry around 1000s of digital books when the alternative would be a moving truck. However, the physical books remain could remain in a physical library building. While the data in digital books could be available as a 24-7 download or web browsing session.
http://dp.la
http://en.wikipedia.org/wiki/Digital_Public_Library_of_America, http://cyber.law.harvard.edu/research/dpla