Woytek 2022a, p. 381-384: "Finally, there is an impressive set of three thick manuscript volumes in quarto format in somewhat worn 19th century half-leather bindings with gilt spines and labels stating “EKHELII [sic!] DOCTRINA MANUSCRIPT”, vols. 1, 2 and 3; the lower label of the third volume adds “ET SYLLOGE”. These volumes (nos. 120–122 in the archives: fig. 4) contain densely inscribed pages in Eckhel’s handwriting, numbered by Eckhel himself; however, as in the volumes described previously, generous margins were left (and very frequently used) by the author for additions and corrections. As we will see shortly, the manuscript is not complete. It is evident that the set of manuscript volumes nos. 120–122 in its present state is the result of the decision, taken after Eckhel’s passing, to have Doctrina-related posthumous papers in his hand bound together. Evidently, whoever was responsible for these volumes tried to bind the quires in the order corresponding to the printed work, although some blatant mistakes in the sequence are evident; heterogeneous additions were bound in at the end of volume no. 122... To sum up, manuscript volume no. 120 seems to document (at least) three different stages in the preparation of Eckhel’s manuscript for parts of the first three volumes of the Doctrina. Firstly, the initial draft, which is without any doubt represented by the first, overarching section, whose text is almost entirely crossed out, and most probably also by the long section on the coinage of Asia, numbered 401–640. Secondly, an advanced draft, which was much closer to the final product, but still not perfect: this stage is clearly represented by the pages 1–48 on the Cimmerian Bosporus, Pontus and Paphlagonia, for example (which are also written on paper of a slightly different quality as compared to the major part of the volume). Thirdly, a tiny sample of Eckhel’s fair copy that was handed to the printer and bears the latter’s marks in red chalk – just six leaves of text, two on the island coinage from Ceos to Delus and four on coins of Cilicia, from Anazarbus to Antiochia incerta.