Greek Paper Money Catalogue by Nick Angelopoulos - Greek Paper Money Catalogue 1822 - 2002, covering everything you need to know exclusively for every single Greek banknote including every type of paper currency form that was associated with Greece .
Latin American Banknote Book - Latin American Banknote Records book by Ricardo M Magan available to view online and download via a PDF. A catalogue of Latin American banknotes produced by the American Bank Note Company for many South American countries.
The Banknote Book - The Banknote Book is available in PDF files sold by subscription or individually by chapter. Definitely worth a look!
World Paper Money Catalogues - World Paper Money catalogues, these are often referred to the numismatic trade as the Pick catalogues, as Albert Pick originally compiled the numbering system, but are also referred to as "Krause" or "SCWPM.