The document discusses the importance and process of developing an effective mission statement for libraries. It begins by defining what a mission statement is and its purpose. It then provides examples of mission statements from different types of libraries like academic, public, school and special libraries. The document outlines the key elements that make for an effective mission statement and the considerations and steps in the drafting process, including brainstorming, writing in an active voice and revisiting the statement periodically. Developing a clear and concise mission statement that guides the library's goals and services is an important part of strategic planning.