The title he excerpted from is called "The Posthumous Papers of the Manuscripts Club" by Christopher De Hamel. It came out 10/27.
And I like this quote from Christopher de Hamel.
Scribes and Illuminators (1992)
Christopher De Hamel, British Museum
In the early monastic period of manuscript production parchment was often quite thick, but by the thirteenth century it was being planed away to an almost tissue thinness.