
Register of the Letters of Pope Gregory I, Volume I
Gregorii I Papae Registrum Epistolarum, Tomus I
The Registrum Epistolarum of Gregory I (Gregory the Great, r. 590–604) is the largest surviving corpus of late antique papal correspondence, comprising some 854 letters organized into fourteen books by indiction year. This volume (Tomus I, Libri I–VII) contains letters from the first seven indiction years of Gregory's pontificate (590–598), edited by Paulus Ewald (Libri I–IV) and, after Ewald's death, by Ludovicus M. Hartmann (Libri V–VII). The edition is part of the Monumenta Germaniae Historica (Epistolae, Tomus I) and remains the standard critical text.
Author

Gregory I
Gregorius I
540–604