Typically, these bookmarks are donated by people (sometimes famous) as part of their larger donation or bequest of books, documents and other items.
Here are a few examples of these bookmarks that I have found so far in some British institutions. Click on the institution name to view the bookmark in its original location and to read more about it.
London, UK
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London, UK
![Picture](/uploads/2/5/2/6/25268337/an00419894-001-l_orig.jpg)
London, UK
British Museum London, UK |