"Moneymaker: The Secret History of Banknote Printing" by Klaus W. Bender Current on sale for AU$46.14 at Book Depository, with free Worldwide Delivery (http://www.bookdepository.com/Moneymakers-Klaus-W-Bender/9783527502363) For anyone interested in the how the note-printing industry works. The book was originally written in German, but the translation is above average. Edit (20-May-2017): now on sale for A$37.67