Jason Gary Horn's new book, _Mark Twain and William James: Crafting a
Free Self_ (Univ. of Missouri Press, 1996) might be a good resource
on Twain's religious views. I just picked it up today and haven't
read much of it yet, but the intro discusses Twain's and James's
views on religion as a personally developed belief system and I
suspect that there will be more on the topic in later chapters.
Jim Zwick
[log in to unmask]http://web.syr.edu/~fjzwick/