The various prior owners of the books in the "Princess Library" can be quickly identified from the bindings. Front and back covers bear different gold-stamped supralibros, sometimes Luise Ulrike's alliance coat of arms at the front and her daughter's monogram at the back. In addition, some spines show the initials S.A. for Sofia Albertina.

„Spine of books from the "Princess Library",” Spotlight on the Objects, zuletzt aufgerufen am 5. Mai 2024, https://ausstellungen.deutsche-digitale-bibliothek.de/spotlight-objects-spk/items/show/143.