From the earliest period the Romans had a clear sense of the value of contemporary records. The _Annales Maximi_ or _Commentarii Pontificum_ contained the names of magistrates for each year, and a daily record [1] of all memorable events from the regal times until the Pontificate of P. Mucius Scaevola (133 B.C.). The occurrences noted were, however, mostly of a trivial character, as Cato tells us in a fragment of his _Origines_, and as we can gather from the extracts found in Livy. The _Libri Lintei_, mentioned several times by Livy, [2] were written on rolls of linen cloth, and, besides lists of magistrates, contained many national monuments, such as the treaty between Rome and Carthage, and the truce made with Ardea and Gabii. Similar notes were kept by the civil magistrates (_Commentarii Consulares, Libri Praetorum, Tabulae Censoriae_) and stored up in the various temples. The greater number of these records perished in the capture of Rome by the Gauls, and when Livy speaks of them as existing later, he refers not to the originals, but to copies made after that event. Such yearly registers were continued to a late period. One of the most important was discovered in the sixteenth century, embracing a list of the great magistracies from 509 B.C. till the death of Augustus, and executed in the reign of Tiberius. Another source of history was the family register kept by each of the great houses, and treasured with peculiar care. It was probably more than a mere catalogue of actions performed or honours gained, since many of the more distinguished families preserved their records as witnesses of glories that in reality had never existed, but were the invention of flattering chroniclers or clients.