This document discusses the organizational structure of libraries. It begins by defining organization and explaining its importance for libraries to achieve goals and objectives in a systematic way. It then describes the typical functional departments of a library, including acquisition, technical processing, circulation, reference, and maintenance. Principles of structuring an organizational chart are also outlined, such as span of management, lines of authority, and centralization vs decentralization of activities. The document provides examples of organizational charts and their role in visually presenting the relationships within a library's structure.