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Museum of local history Hildburghausen (ed.) (c. 1997):Die Dunkelgräfin. Das große Geheimnis von Hildburghausen.
Booklet for the exhibition of the museum. Text by Helga Rühle von Lilienstern.
2nd edition 2007
Content:
The booklet for the exhibition of the museum of local history
Hildburghausen gives a short summery about the topic Dark Countess.