Washington's God: Religion, Liberty, and the Father of Our Country
Michael Novak, Jana Novak
This turned out to me much less a contrast
with American Gospel, as a reinforcement of it. For, though its thesis and aim was to demonstrate that Washington was a believing Christian, at the bottom line the conclusion was that he lived his faithful artfully, so as to be a leader for all citizens, whatever their faith.
"Absence of evidence is not evidence of absence" could summarize the book - though I'm not sure exactly what that will mean to each reader. There is surely absence of Washington as a Christian in any "evangelical" sense - but there isn't clear evidence that he was a fullblown deist or unitarian.
The Novaks spend a lot of time detailing religious issues of the time, and all the secondary evidence that Washington was a solid Anglican Christian. They tread carefully, and generally don't overstate the case. Perhaps weakest is their citing of contemporaries of Washington and his time and use that to say "Washington would have known this," or "Washington may have believed as did so-and-so."
Worth reading - along with all my other current revolutionary era books, fiction and non - but probably won't appeal as broadly as 1776 or American Gospel. (I'd read them all, but 1776 first, American Gospel next, and then this one.)