If music be "text" in the sense of this question, 17th-19th century music publishing offers the best opportunities for studying whole books published from copper plates, as almost all music --- vocal as well as instrumental --- was published in this way during this period.
Perhaps it is significant too that printed music did (and still does) only rarely disclose its year of publication. On the other hand, the 18th century way of music publishing on demand was ordering a handwritten copy from the publishers --- who actually advertized this way of obtaining unpublished or out of print music, and evidently maintained professional "scriptoria" to meet the demand.
I cannot remember the right references just now, but I assume that any book on music publishing will put you on the right track.
J.A. Gruys
hans.gruys@kb.nl