Reference edition:

Vitae Vergilianae antiquae, recc. G. Brugnoli et F. Stok, Romae 1997 (F. Stok pp. 17-18).

A single manuscript (Par. Lat. 11303) also preserves - in addition to the Vita Vergili and the Praefatio to the Eclogues - the dedicatory epistle to the Vergilian commentary, addressed to a certain L. Munatius. In this Donatus makes clear the criteria he utilized in setting forth and synthesizing the preceding exegesis.

The epistle was used in the Vita Donati of a certain Flaccus Rebius, who addresses it to a certain Minutius Rotilus: it is a parodic text, attested by two codices of the 9^th c., probably of a medieval scholastic-monastic environment (Brugnoli, Munzi, Conte).  [F. Stok; tr. C. L. Caterine].