Digital versions of several hundred of the "world 's great books from some of the greatest libraries." Among the titles are:

1. Some of the great books in science, including books by Galileo, Newton, Copernicus, Kepler, Einstein, Darwin and others.
2. Most of the Shakespeare Quartos from the British Library, the Bodleian Library, the University of Edinburgh Library, and the National Library of Scotland. It also contains the First Folio from the Folger Shakespeare Library.
3. The complete copies of Poor Richard's Almanac by Benjamin Franklin.
4. Very rare editions: Gutenberg's Bible of 1455 (from the Library of Congress), Harvey's book on the circulation of blood, Galileo's Siderius Nuncius, the first printing of the Bill of Rights, and the Magna Carta.