This chapter defines community in its broadest sense as shared experience based on ethnicity, racial origins, religion, geography, or other cultural values. It provides examples of public history projects in museums, preservation of historical resources, and oral history that demonstrate how the collaborative nature of community history requires shared authority, dialogue, and participatory management. These projects exemplify best practices for successful community-based history that balance experience with expertise; historical analysis with current-day relevance; and inner dialogue with public discourse. The chapter considers why community history matters as a form of civic dialogue and how emerging technology may impact and challenge public history dialogue in the future.