The British Library recently released an app (for iPad) featuring over one thousand 19th century books on a variety of subjects ranging from travel to drama, geography to poetry. If you've ever wanted to hold an 1882 edition of Mary Shelley's Frankenstein, this and many other significant texts of the 19th century are available for viewing. You can read more about this initiative and future digitization plans of the British Library here: http://pressandpolicy.bl.uk/Press-Releases/BiblioLabs-and-the-British-Library-Announce-British-Library-19th-Century-Historical-Collection-App-for-iPad-4f6.aspx
Western Libraries has also been exploring digitization of unique historical collections. Through Internet Archive you can view scanned copies of books from our Ontario Textbook Collection, featuring textbooks used in Ontario classrooms between 1846-1970: http://www.archive.org/details/universitywesterno
These textbooks can also be discovered through our Shared Library Catalogue.