 According to most sources, the archive that is now the archive of the Congregation for the Doctrine of the Faith was founded in the sixteenth century – most likely in 1542 when Pope Paul III first established the Roman Inquisition as a central body for Church doctrine at the beginning of the Counter-Reformation.The Index of Forbidden Books was founded in 1571.Before this, there was no centralised means for collecting Inquisition papers, and it is generally believed that all or almost all important documents have been lost or even deliberately destroyed.