Seymour Lubetzky ranks among the greatest minds in library science. His groundbreaking works devoted to the problem of modern cataloging in the 20th century place him with Antonio Panizzi and Charles Cutter. Now, for the first time, Lubetzky's works are being published as a collection, which includes a complete reproduction of his three most influential titles: Cataloging Rules and Principles, Code of Cataloging Rules, and Principles of Cataloging, as well as periodical articles. The selections included in this book are presented in chronological order so that the development of Lubetzky's thought can be followed from his first writings on cataloging problems in the late thirties and early forties to writings in the following decades that consolidate and reiterate his philosophical and methodological stances. The book includes an introduction by the editors, relating to the major events in Lubetzky's writing career, as well as a comprehensive bibliography of his works. An absolute must-have for faculty and students of library and information science, cataloging professionals, and librarians.