Often controversial, religion has been an important force in shaping American culture. Religious convictions strongly influenced colonial and state governments as well as the United States as a new republic. Religious teachings, values, and practices deeply affected political structures and policies, economic ideology and practice, educational institutions and instruction, social norms and customs, marriage, and family life. By analyzing religion's interaction with American culture and prominent religious leaders and ideologies, this reference helps readers to better understand many fascinating, often controversial, religious leaders, ideas, events, and topics.

The work is organized in three volumes devoted to particular periods. Volume one includes a chronology highlighting key events related to religion in American history and an introduction that overviews religion in America during the period covered by the volume, and roughly 10 essays that explore significant themes. These essays are followed by approximately 120 alphabetically arranged reference entries providing objective, fundamental information about topics related to religion in America. Each volume presents nearly 50 primary source documents, each introduced by a contextualizing headnote. A selected, general bibliography closes volume three.