It’s not as hard to write a book in American religious history as you might think. Feel free to use this handy template.
Introduction- X has been important throughout American religious history.
Chapter 1. What the Puritans said about X
Chapter 2. What Jonathan Edwards (and maybe George Whitefield) said about X
Chapter 3. How X was shaped by the early Republic and the Second Great Awakening
Chapter 4. The Victorian X
Chapter 5. X in the Civil War
Chapter 6. Reforming X in the Progressive Era
Chapter 7. How X took on shifting meanings in pre-WWII America
Chapter 8. How the 1960s radically changed X, but not for everyone
Chapter 9. A new multifaceted X in the 21st century
Conclusion- See, I told you X was important.