For the most part, texts of the traditional Greek and Latin authors were imported to the America colonies from Europe in the 17th and 18th centuries. In time, the Colonial printing industry became sophisticated enough to print Greek and Latin texts. By the middle of the 18th century, for example, Benjamin Franklin's printing house not only published Cicero's Cato Major, but it also included a preface by Franklin himself. In time, texts of Vergil, Quintilian, Horace, Juvenal, Phaedrus, Livy and Tacitus were printed in America.