The Black Madonna
We cannot be certain of the origins of the cult of the Black Madonna - some believe that she is the sucessor of the early pagan earth goddesses - Lilith, Kali etc.
Others believe that she represents the Virgin Mary.
Yet others believe that she represents Mary Magdalene as the mother of Christ's heir.
The Cult of the Black Virgin (Arkana)Vierges noiresCathedral of the Black Madonna: The Druids and the Mysteries of Chartres
The Cult of the Black Virgin (Arkana)
by Ean Begg

This is the best book that I have found in English concerning the Black Madonna. An excellent gazeteer details Black Madonna ...
Vierges noires
by Sophie Cassagnes-Brouquet

This book in french is well worthwhile having for the photographs alone, even if you do not understand french.
Cathedral of the Black Madonna: The Druids ...
by Jean Markale
$11.53
Written by the foremost author for all aspects of french mysteries
Déeses mères et vierges noiresLe mystère des vierges noiresLa Vierge noire et le mystère marial
Déeses mères et vierges noires
by Jean-Pierre Bayard
Le mystère des vierges noires
by Daniel Castille
La Vierge noire et le mystère marial
by Jean Hani