Vatikan, Biblioteca Apostolica Vaticana, Ottob. lat. 3295
The manuscript consists of two originally independent parts: Fascicle I (foll. 1-13) was written in the 1st half of the 9th century probably in Mainz, fascicle II (foll. 14-84) in the 3rd quarter of the 9th century possibly in the Rhine-Main region or in the Upper Rhine-Alsace area. Frederick S. Paxton considers the manuscript from Cologne, where it was held since the 9th / 10th century, to have been sent to Lorsch for correction purposes.