This document provides an overview of the history and development of library cataloguing codes. It discusses early cataloguing practices and some of the seminal cataloguing codes developed over time, including Panizzi's 91 Rules, Jewett's Rules, Cutter's Rules, the 1908 ALA Code, Prussian Instructions, Vatican Rules, Classified Catalogue Code, ALA Rules 1949, Library of Congress Descriptive Rules, AACR1, AACR2 and its revisions. The document traces how cataloguing evolved from individual library practices to a more standardized and principle-based approach through the development of these various codes and standards.