If you are looking for another source on the discussion of Christianity and history, look no further than a series of postings from Britannica's blog, "Lessons from the Founding Fathers".
I was trying to decide what to quote from the entry as an example of what you would find, but felt I would take something out of context. However, the last two paragraphs are an interesting sidelight as an example of Christianity's involvement in framing our Constitution:
"It was the relatively few Baptists of southern Virginia to whom we most owe the
First Amendment. They insisted, by threatening to withhold the substantial vote
they cast within his new district, that Madison go back to Congress and get the
Right to Religious Liberty into the Constitution, by amendment, even though his
own preference was not to do so. He got the point, and he did so.
That is why it is no surprise that Jefferson chose for the audience of his letter on “the wall of separation between church and state” a Baptist convocation. He knew whence came the social strength for religious liberty."
The post identifies several books which would be good additions to any academic church history collection:
Personally, I use my RSS feed to read this blog as it doesn't align correctly on my screen otherwise.