Curiosa: Children and servants in yet another context

I found this pasted to the inside front cover of a venerable copy of Milton's Paradise Regained:

NOTICE.
      The Trustees of the New-York Society Library deem it their duty to request all persons interested in the institution to exercise a little care in preventing the Books from getting injured when taken out of the Library. They are frequently blotted, scribbled in, and torn by children, and often soiled by servants bringing them to the Library without an envelope.

      It should also be remembered, that no person has a right to insert any comments, however correct, in the margin, or other parts of a Book, either with a pen or pencil. This practice induces others to disfigure the page with idle and unnecessary remarks.

      According to the By Laws of the Society, any person losing or injuring a Book is liable to make reparation to the full value of the whole set to which the volume may belong.

I have to indulge in a professional smirk here, since yesterday's "idle and unnecessary remarks" are today's "copious annotations in ink and pencil." For example, I'm in the process of finishing work on a record for a late fifteenth-century copy of Bernhard von Breydenbach's Peregrinationes in Terram Sanctam formerly owned by the notable humanist Conrad Celtes. He seems to have been quite interested in Breydenbach's descriptions of military matters (particularly things that go BOOM!) and left marginal marks and notes next to several passages that, er, struck him. He may also be responsible for adding a handwritten chart of the Glagolitic alphabet to the various woodcuts depicting Greek, Coptic, Syrian and Arabic writing systems. Maybe. The book subsequently fell into the hands of the stipendiati of the Lilienburse in Vienna and passed from them to a Franciscan convent before being purchased in 1802 by an Anglophone person whose name has been scratched out, and I'm not enough of a handwriting expert to judge whether someone other than Celtes has been idly doodling in the margins. Some conundrums are best left as an exercise for the reader.