glennf, 
Having visited four rare book and manuscript reading rooms in the last week, and being mildly admonished in one for bringing in a camera case that fit the camera but was considered technically a bag, the ability of people to steal these books is baffling to me. https://www.nytimes.com/2024/05/01/books/booksupdate/rare-books-pushkin-disappearance.html?unlocked_article_code=1.ok0.tGKz.8EhCFIXJJIf6&smid=nytcore-ios-share&referringSource=articleShare&sgrp=c-cb
When I left one room, I was politely asked to open the cover of my iPad to ensure no papers were inside.