I'm sorry that I didn't come across this post sooner. It seems that Loren & Peter Cain no longer have the same email address.
Over the years, I have come across several men who were known as Chief Whitefeather and can definitely say that the one they mention is not the one discussed in this thread
The Chief Whitefeather whom they mention was a close friend as well as his son, who is still living.
I do hope they check back sometime and see this as I have much more information that I could share.