I've recently purchased a box of German coinage and Notgeld. Cataloging The German States coinage was a bit of an adventure, but I don't have any books on how to classify the City/State coinage issued at the end of WW1, nor anything on the Paper money. I don't know what books to look for, or really where to look except perhaps ebay or amazon. Could some of the more enlightened members offer some direction? 10Q JonySky
"Notgeld" is "emergency money", created for the same reasons as US Hard TimesTtokens, English Conder Tokens, etc.
Check Germancoins.com hes got books also. karlstepensinc.com has loads of books on German coins, some in German too.You may have aproblem finding a book like that in English,but if I remember correctly the books can be figured out.