587 years before the Gutenberg Bible was printed, the Dunhuang scroll was printed using an already mature woodblock technique.  The text printed was the Diamond Sutra.  In a surprisingly contemporary manner, the text comes with this attempt to be available:

Reverently made for universal free distribution by Wang Jie on behalf of his two parents on the 15th of the 4th moon of the 9th year of Xiantong [11 May 868].

Perhaps a text such as this would make a good discussion point.