An ivory bookmark told him the page.
"Ulysses"
James Joyce
I remembered the glove, and the thought of it was more delicious than a breakfast of Cornish cream and honey; although, of course, lurking in the background of my mind was the horrid idea that he might have accidentally picked the thing up to use as a bookmark.
"Set in Silver"
Charles Norris Williamson and Alice Muriel Williamson
It was a bookmark, with a red heart, which lay between the leaves.
"Jerusalem"
Selma Lagerlöf