I am interested by the Native American church (aka Peyote Religion) which seems to be a Christian church that includes aspects of traditional Amerindian religions with a more recent use of the (midly) hallucinogenic peyote cactus.
I like the sound of this church, and I am delighted by the fact that Christianity can arise and thrive in so many different forms; but the internet sources all seem tainted by political correctness. Significantly, the Native American Church itself does not seem to have an official internet presence; which perhaps suggests it is a mystery religion restricted to initiates.
Anyway; my 'bleg' is for any reliable and sympathetic 'insider' sources on the Native American church, preferably from before 1965 and without a 'progressive' axe to grind.
One interesting aspect of this church is the use of peyote to attain a psychological state in which the participants can directly apprehend the spirit world.
My interpretation of this is that modern Indians (since the 19th century, at least) seem to need a consciousness-altering drug to do what earlier generations did spontaneously. And peyote, by itself is insufficient - the ceremony seems to last many hours, with arduous dancing, perhaps fasting and using other psychoactive substances such as tobacco.
This would fit with the general pattern of mainstream societies who have experienced a withdrawal of the spirit realm - although Westerners are even further down that line, and most of us would not have a convincing (life transforming) religious experience even if we used peyote; probably because the other, tribally-bonded aspects of the ceremony would be ineffective.