A Millennium of the Book, Edited by Robin Myers & Michael Harris, contains seven important essays on book history. Likely the best known to book conservators is Nicholas Pickwoad’s ”Onward and downward: how binders coped with the printing press before 1800″.
Standing upright in the middle of a section of my copy of this book is a manufacturing error— a broken sewing needle. I can feel it’s impression on about 30 leaves before and after it.
A material manifestation of Pickwoard’s argument in the 20th century? Accidental book art?

Your have indeed been gifted and deservedly so, Jeff.
Great stuff :the book sounds very interesting
Found a needle with tread still attached in a book (17th century German with wooden boards) once. Other than seeming to miss the next station or so, the sewing continued on its merry way. Perhaps distracted by lunch, end o day, the Master’s daughter…