In my previous post on the blank "A1" leaves that were sometimes used to protect the title-pages of early modern books, I missed an example from our collection. The reason that I missed it is because I had filed it away under "owner's marks," and so I'm quite pleased to see that, contrary to my earlier assertion, at least one of our blank A1 pages does indeed contain some form of writing. Here is the title-page of An Answere to Certaine Scandalous Papers, Scattered abroad vnder colour of a Catholicke Admonition (1606):