This article re-evaluates the role of the manuscript tradition of the Historia Augusta in debates over the original contents and authorship of the text. Evidence for physical disruptions to the text before our oldest surviving manuscripts points to an earlier manuscript distributed across multiple codices. A multi-volume archetype eliminates critical arguments against the author's claims about lives missing before the Life of Hadrian as well as in the lacuna for the years a.d. 244–260. Other multi-volume codices of the eighth and (...) ninth centuries show that loss of an initial volume would have disrupted the textual tradition for the index, titles and authorial attributions. Comparison of our most complete early witness, Pal. lat. 899, to the independent branches of the textual tradition shows discrepancies between these paratextual elements as expected in a disrupted tradition. Ultimately, this article concludes that the current debates on authorship and the original scope of the Historia Augusta rest on paratextual elements from a single branch of the manuscript tradition, raising doubts about the centrality of these controversies to understanding the work. (shrink)