During the fifteenth century and the first half of the sixteenth, civil law underwent important changes which affected both the text of the collections encompassed in the Corpus iuris civilis and legal scholarship. The quasi-monopoly of Italian authorities was only very gradually eroded by scholars from transalpine universities. The reliance of non-Italian authors on the major fourteenth- and fifteenth-century authors contributed to ensure that the late medieval commentaries, collections of consilia, treatises and other works continued to circulate extensively throughout the western European market, England included. The English libraries contained on the whole substantially more canon law books than civilian literature. The chapter also talks about the availability of civil law literature in the standard civil law library, the scholarly library, the practitioner's library, and the ecclesiastical and monastic libraries. The standard civilian library, usually achieved only partly in specific collections, was the ideal for both private and institutional collections.