text: Thus, when his duties called him to the Council of Constance in 1414, he employed his forced leisure in exploring the libraries of Swiss and Swabian abbeys. His great manuscript finds date to this period, 1415−1417. The treasures he brought to light at Reichenau, Weingarten, and above all St. Gall, retrieved from the dust and abandon many lost masterpieces of Latin literature, and supplied scholars and students with the texts of authors whose works had hitherto been accessible only in fragmented or mutilated copies.
  St. Gallen
  In his epistles he described how he recovered Cicero's Pro Sexto Roscio, Quintilian, Statius' Silvae, part of Gaius Valerius Flaccus, and the commentaries of Asconius Pedianus at St. Gallen. He also recovered Silius Italicus's Punica, Marcus Manilius's Astronomica, and Vitruvius's De architectura. The manuscripts were then copied, and communicated to the learned. He carried on the same untiring research in many Western European countries.
  Cluny Abbey
  In 1415 at Cluny he found Cicero's complete great forensic orations, previously only partially available.
  Langres
  At Langres in the summer of 1417 he discovered Cicero's Oration for Caecina and nine other hitherto unknown orations of Cicero's.
  Monte Cassino
  At Monte Cassino, in 1429, a manuscript of Frontinus' late first century De aquaeductu on the ancient aqueducts of Rome.  He was also credited with having recovered Ammianus Marcellinus' Res Gestae (Rerum gestarum Libri XXXI), Nonius Marcellus, Probus, Flavius Caper and Eutyches.
  Hersfeld Abbey
  If a codex could not be obtained by fair means, he was not above using subterfuge, as when he bribed a monk to abstract a Livy and an Ammianus from the library of Hersfeld Abbey.