Roger Pearse, a very active amateur of patristics, has just put online his translation of Alexander Vasiliev's 1915 French translation of Agapius (Mahbub) of Manbij (Hieropolis, Mabbug)'s world history, the Kitab al-'Unwan. This important work had not been previously available in English despite the French and Arabic editions having been prepared almost a century ago. Roger has been quite interested lately in encouraging, often with his own money, translations of otherwise unavailable patristic works, especially from Arabic and Syriac. He then releases everything into the public domain.
Agapius was the Orthodox bishop of Manbij in what is today northern Syria in the 10th century and is the earliest Christian historian to write in Arabic. His history is particularly notable because it preserves otherwise unknown fragments from the 2nd century Christian writer Pappias of Hieropolis as well as some philologically important citations of Josephus.
You can find the text on Roger's patristics website here.