Medieval drama

I seem to have misplaced one of my souces. Particularly, one I was planning on quoting in my conclusion. More disturbingly, it was a library book. The writer’s last name is Frank. I know I brought it to Paris with me. I wonder if it made it all the way back, of it got abandoned along the trip? I bet it’s against the rules to take libary books out of the country.
I bet the book is out of print