I don't know about most people but I prefer to have physical copies or coin and banknote books for reference. And while the Standard Catalog of World Banknotes is a great resource sometimes it leaves some to be desired. For a while I have been looking for a book that is specifically about Czechoslovakia, unfortunately a book like that simply doesn't exist in English. I have great resource for Latvian Banknotes by Lee Gordon. It is in English, readily available, and has large full color photos of
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