The Patrologia Latina (Latin for The Latin Patrology) is an enormous collection of the writings of the Church Fathers and other ecclesiastical writers published by Jacques-Paul Migne between 1841 and 1855, with indices published between 1862 and 1865. It is also known as the Latin series as it formed one half of Migne’s Patrologiae Cursus Completus, the other part being the Patrologia Graeco-Latina of patristic and medieval Greek works with their (sometimes non-matching) medieval Latin translations.

Although consisting of reprints of old editions, which often contain mistakes and do not comply with modern standards of scholarship, the series, due to its availability (it is present in many academic libraries) and the fact that it incorporates many texts of which no modern critical edition is available, is still widely used by scholars of the Middle Ages and is in this respect comparable to the Monumenta Germaniae Historica.

The Patrologia Latina includes Latin works spanning a millennium, from Tertullian (d. 230) to Pope Innocent III (d. 1216), edited in roughly chronological order in 217 volumes; volumes 1 to 73, from Tertullian to Gregory of Tours, were published from 1841 to 1849, and volumes 74 to 217, from Pope Gregory I to Innocent III, from 1849 to 1855. Although the collection ends with Innocent III,[1] Migne originally wanted to include documents all the way up to the Reformation; this task proved too great, but some later commentaries or documents associated with earlier works were included.

Most of the works are ecclesiastic in nature, but there are also documents of literary, historical or linguistic (such as the Gothic bible in vol. 18) interest.

The original printing plates for the Patrologia were destroyed by fire in 1868. However, with help from the Garnier printing house they were restored, and new editions were printed beginning in the 1880s. The content within these reprints is not always identical to the original series, either in quality or internal arrangement. The new editions have been described as “inferior in a number of respects to Migne’s own first editions.”

Patrologia Latina – Wikipedia

https://en.wikipedia.org/wiki/Patrologia_Latina

The Patrologia Latina (Latin for The Latin Patrology) is an enormous collection of the writings of the Church Fathers and other ecclesiastical writers published by Jacques-Paul Migne between 1841 and 1855, with indices published between 1862 and 1865. It is also known as the Latin series as it formed one half of Migne’s Patrologiae Cursus Completus, the other part being the Patrologia Graeco-Latina of patristic and medieval Greek works with their (sometimes non-matching) medieval Latin translations.