Titus Livius (Livy), The History of Rome, Book 1
Rev. Canon Roberts, Ed.

38. Collatia¹ and all the territory on this side of it was taken from the Sabines; Egerius, the king's nephew, was left to hold it. [2] I understand that the procedure on the surrender of Collatia was as follows: The king asked, ‘Have you been sent as envoys and commissioners by the people of Collatia to make the surrender of yourselves and the people of Collatia?’ ‘We have.’ ‘And is the people of Collatia an independent people?’ ‘It is.’ ‘Do you surrender into my power and that of the People of Rome yourselves, and the people of Collatia, your city, lands, water, boundaries, temples, sacred vessels, all things divine and human?’ [3] ‘We do surrender them.’ [4] ‘Then I accept them.’

After² bringing the Sabine war to a conclusion Tarquin returned in triumph to Rome. Then he made war on the Prisci Latini. No general engagement took place, he attacked each of their towns in succession and subjugated the whole nation. The towns of Corniculum, Old Ficulea, Cameria, Crustumerium, Ameriola, Medullia, Nomentum, were all taken from the Prisci Latini or those who had gone over to them. [5] Then peace was made.

Works³ of peace were now commenced with greater energy even than had been displayed in war, so that the people enjoyed no more quiet at home than they had had in the field. [6] He made preparations for completing the work, which had been interrupted by the Sabine war, of enclosing the City in those parts where no fortification yet existed with a stone wall. The low-lying parts of the City round the Forum, and the other valleys between the hills, where the water could not escape, were drained by conduits which emptied into the Tiber. [7] He built up with masonry a level space on the Capitol as a site for the temple of Jupiter which he had vowed during the Sabine war, and the magnitude of the work revealed his prophetic anticipation of the future greatness of the place.