Uh, hang on there. As the Toady quote mentions, in a quasi-medieval setting, most books would likely be written on parchment/vellum from calfskin, NOT paper made from wood pulp. You would need a herd of cows, lye, and either a parchment workshop or more options are the tannery ( though the parchment is not tanned, this would be a reasonable association ).
Furthermore, you'd need either an alchemist option or a parchment workshop option for making black gall ink from processed oak galls for tanic acid, plus green vitriol/iron sulfate. Reeds for caligraphy and quills for regular script would also be necessary. Hell, while we're at it, include bone stylus thingies too.
A calligrapher would necessarily need the reed and stylus, and even if you included wood paper, a master calligrapher wouldn't work with anything less than parchment ( since it does not absorb gall ink, mistakes can be scraped off without damaging the parchment ).
That said, bare minimum you would need the new job class Scribe, with subclasses Calligrapher, Notary/Scribe, Book Binder, Parchmentist ( is that even a word? ), and possibly Scribe's apprentice, who makes the ink, and carves styluses, reeds, and quills. I suppose those could be under crafts, it would be nice if it was set off.
For solid bindings, I'd guess catgut or the like would also be needed ( produced at the tannery?). Adding a mechanic for "locked" books would be cool too, giving the key to specific persons. How that would affect Dwarf mode I don't know, but in Adventure mode it adds some fun possibilities.
For scrolls, the rollers would need to be produced out of, of course, wood, stone, metal, glass, etc.
Whoa, more of a rant than I was planning. In any case, a quasi medieval setting necessitates books being expensive and time consuming to produce. One can not really just easily produce them by hand, as much as we all like the mystique of D&D universes where books are so ubiquitous it is almost silly. Then again, as Rhenaya said, Dwarf Fortress is rather D&D-esque, so taking books too seriously might be a spot of excessive realism in a world where magma furnaces are reasonable devices...so awesome.