The Law Library of Congress has acquired two volumes of an extraordinarily rare 1478 edition of the "Casus breves" of Johannes de Turnhout (c. 1446-1492), printed by the Brotherhood of the Common Life at their Brussels press, Te Nazareth Gheprint. Only 13 copies of the 1478 edition of "Casus breves" - the oldest - are known to exist in the world. With this acquisition, the Law Library of Congress' edition will be the only copy in the United States. It is made available through the generosity of Julie Chrystyn Opperman, in honor of her husband, Dwight D. Opperman. In announcing the gift, Law Librarian of Congress Roberta I. Shaffer said, "We are most grateful to the Oppermans for their exquisite gift. The "'Casus breves,'" a reference work for practicing jurists for more than 500 years, will enhance the Law Library's significant holdings of rare legal tomes that highlight some of the distinct developments in the legal systems of Western law tradition"