The beauty of this book is that Heinz Halm uses multiple sources and works of multiple authors. His sources vary from non-Muslim writers such as John of Antioch (Greek-Orthodox) to Sunni author Al-Maqrizi, who was first historian to recognize the importance of Fatimid in the history of Egypt and Syria, to Idris Imad al-Din, who was supreme missionary dai of Musta’ali Tayyibi Ismaili community of Yemen, and numerous Ismaili missionaries from the Fatimid period. Despite the loss of Fatimid records, it was possible for Halm to find authentic records about Fatimids. Certainly he had to filter unauthentic information provided by hostile anti-Fatimid authors whose mission was to destroy the image of Fatimids in history.
More: Book Reviews by Samina: The Fatimids and Their Traditions of Learning:.
Ismailimail 
Thanks for that review Samina; if anything it shows that there is more than one way to skin a cat in the pursuit of historical truths.
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