Jami' al-tawarikh
The lavish illustrations and calligraphy required the efforts of hundreds of scribes and artists, with the intent that two new copies (one in Persian, and one in Arabic) would be created each year and distributed to schools and cities around the Ilkhanate, in the Middle East, Central Asia, Anatolia, and the Indian subcontinent. Approximately 20 illustrated copies were made of the work during Rashid al-Din's lifetime, but only a few portions remain, and the complete text has not survived. The oldest known copy is an Arabic version, of which half has been lost, but one set of pages is currently in the Khalili Collection, comprising 59 folios from the second volume of the work. Another set of pages, with 151 folios from the same volume, is owned by the Edinburgh University Library. Two Persian copies from the first generation of manuscripts survive in the Topkapı Palace Library in Istanbul. The early illustrated manuscripts together represent "one of the most important surviving examples of Ilkhanid art in any medium", and are the largest surviving body of early examples of the Persian miniature.
History of the Lombards
The relations between these manuscripts were studied by Georg Waitz, who in 1876 identified 11 different families of the "Historia Langobardorum". The oldest manuscript is the Palimpsest of Assisi, written in the uncial script towards the end of the 8th century, almost immediately after Paul's work was completed. This palimpsest is, however, far from complete, as it contains only parts of books II and V of Paul's history. The earliest complete manuscript is the "Codex Sangallensis 635" written sometime between the 8th and the 10th centuries and designated by Waitz as F1. According to Waitz, F1's age makes it the most reliable of the "Historia"'s codices, a view which has been challenged by Antonio Zanella and Dante Bianchi, both of whom hold that the F1 does not correctly reflect Paul's original. 
Paul's account was largely accepted by subsequent writers, was often continued, and was first printed in Paris in 1514. Among the printed editions of the Latin text, the most authoritative is that edited by Ludwig Konrad Bethmann and Georg Waitz and published in the "Monumenta Germaniae Historica. Scriptores rerum langobardicarum et Italicarum" (Hanover, 1878).