Polish publications
Szwagrzyk Józef Andrzej - Pądz na ziemiach polskich, Wydawnictwo Ossolineum 1990, second edition revised and supplemented, ISBN 8304011239
406 pages + dozens of A4-size tables, semi-thin hardcover with wrapper, several hundred photos of coins and banknotes, another book - somewhat modeled on "A Thousand Years of Polish Coinage" - which should be read to develop an interest in numismatics