What is "bookplates"

Usage examples of "bookplates".

She took the book from the shelf effortlessly and, supporting the spine in her palm, opened it at the first page, decorated with several bookplates, some very old.

Bill Clinton regularly requests early copies of his novels and George Bush Sr recently wrote asking for some signed bookplates for his wife.

The immaculate first editions cherished by rare-book collectors—no notes, no signatures, no bookplates—now leave me cold.