I think any period in history can be adapted into interesting fiction as long as you approach the actual history with respect.
There are so many stories to tell in the worlds of science fiction the...
Lately I did a film called All I Want for Christmas and it was well received....
In Lincoln's day a President's religion was a very private affair. There were no public prayer meetings no attempts to woo the Religious Right. Few of Lincoln's countrymen knew anything at all of his religious beliefs.