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*{{Cite book|url=https://books.google.com/books/about/Standard_Catalog_Of_World_Paper_Money_Ge.html?id=BuNA39dnuHsC|title=Standard Catalog of World Paper Money General Issues (1368-1960)|edition=13|publisher=Krause|isbn=978-1-4402-1293-2|editor-last=Cuhaj|editor-first=George S.|year=2010}}{{Pranala mati|date=Februari 2023 |bot=InternetArchiveBot |fix-attempted=yes }}
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*GermanNotes.com (2005). ''German Paper Money 1871-1999''. [https://archive.isph/20060528203514/http://www.zapzero.com/gn/shop/product_info.php?cPath=28&products_id=82 eBook from germannotes.com]
*{{cite journal|last1= Kelly|first1= William J.|year= 1920|title= The Situation at Danzig|journal= Journal of the American-Polish Chamber of Commerce and Industry|volume= 1|issue= 6|publisher= American-Polish Chamber of Commerce and Industry|url= https://books.google.com/books?id=iGHnAAAAMAAJ&pg=PA30}}
*{{cite journal|last1= Rand McNally|year= 1911|title= The Rand-McNally Banker’s Director and List of Attorneys|journal= Rand McNally International Bankers Directory|volume= 70|issue= 1|publisher= Rand McNally & Company|url= https://books.google.com/books?id=hG07AQAAMAAJ}}
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