Murals in a post office can be an important way to explore how public art functions in a community because they represent stories about history, culture, people, and lives. In this lesson, middle school students will investigate murals at a local post office in Sheboygan, Wisconsin to learn about the function of public art and the social role artists play in presenting work to a public. Murals as a form of public art are significant because they are often site-specific and involve some collaboration from the community. Public art is often used for political ends. Students will discover how community history is constructed and how the past continues to influence the present. (Contains 5 figures and 2 endnotes.)