In publication since 1960 and now in its ninth volume, the Catalogus Translationum et Commentariorum furnishes concrete evidence of when, where, and how an ancient author was known and appreciated in monastic, university, and humanist circles. Each article presents a historical survey of the influence and circulation of a particular author down to the present, followed by an exhaustive listing and brief description of Latin commentaries before 1600 on each of his works. For Greek authors, a full listing of pre-1600 translations into Latin is also provided. Sources of translations and commentaries include both printed editions and texts available only in medieval and Renaissance manuscripts.

In the newest addition to the series, Volume IX, four authors are treated in separate articles: Epictetus, Gregorius Turonensis, Plinius Caecilius Secundus, and Propertius. The articles present four fascinating authors whose literary impact is extensive.

As one of the three major representatives of the so-called New Stoa, Epictetus captures in his works the main ethical ideas of ancient Stoicism. Pliny the Younger's letters were well known during the Middle Ages and repeatedly quoted and commented upon during the Renaissance. Propertius and the genre of Roman love-elegy inspired a vast number of humanist poets, from Petrarch and Aeneas Silvius Piccolomini to Panormita, Pontano, and Marullo. Finally, the roster of works left by Gregory of Tours reveals an author of wide interests in history, hagiography, biblical exegesis, and astronomy. Gregory's history of the Franks and books of miracles were quarried for material throughout the Middle Ages by other historians, as well as canonists and preachers. A list of addenda and corrigenda to four previously published articles (Ps. Cebes, Pomponius Mela, Silius Italicus, Solinus) concludes the volume.

Contributors to the volume include Gerard J. Boter, Lucia A. Ciapponi, John J. Contreni, Mary Ella Milham, Frances Muecke, and Douglas F. S. Thomson.