While there is growing historiographical analysis of the reuse of circulating narrative materials in medieval books from various textual traditions, there have been fewer studies of the late antique and early medieval periods that have considered the process of authorial self-revision. This is especially the case with early Arabic/Islamicate texts. This study is a discussion of the historical material that is reused in the two surviving Arabic works of the Muslim author al-Balādhurī (d. ca. 892 CE/279 AH), material which appears in his Kitāb Futūḥ al-buldān (The Book of the Conquest of Lands) and that was apparently reused in his Ansāb al-Ashrāf (The Lineage of Nobles). In discussing how al-Balādhurī recycled this information and emplotted ...