A hodgepodge of historically or (historian-) relevant readings from the last few weeks… 1. Of greatest interest to the historians around here (particularly those of us who don’t make it to Cambridge regularly), Harvard and the National Library of China have signed a deal to digitize Harvard’s collection of 51,000 rare Chinese books: Once completed, these images dating as far back as the Song ynasty in 960 AD, will be publicly available for free on the Web to scholars in China and elsewhere. “We need to change the mindset that rare materials must be kept behind closed doors,’’ said James Cheng, the head librarian at Harvard-Yenching, a separate building just outside Harvard Yard. “A library is not a museum.’’ Furui Zhan, who oversees his cou...