Religion and the Founding of the American Republic

The Library of Congress has an exhibit called Religion and the Founding of the American Republic:

"This exhibition demonstrates that many of the colonies that in 1776 became the United States of America were settled by men and women of deep religious convictions who in the seventeenth century crossed the Atlantic Ocean to practice their faith freely."

Because it's a library, the exhibit consists mainly of books and documents, but the online articles are fascinating.