After thinking about this Pow-wow stuff, I decided to go to a higher authority. I emailed my dad and my aunt and uncle to see if they knew anything about it or if my grandparents ever talked about Pow-wow. Quite to my surprise, this was what my aunt had to say about it:

Hi Greg,
I sure have heard of Pow Wowing. Yes Mammy and Pappy and Mammy Up did talk about it. I will get back to you and share what I know later this evening... I also want to read what is on the web site. It might jolt my memory of things that I forgot. It is actually a Pa Dutch "Medicine Man ritual". There were people in the valley that were believed to have those powers. The most common one that I heard of was for warts. Les said he know someone who went for pow wowing to get rid of shingles and they went away over night by the powers or by coincidence. It was the lady who lived in the double house when they lived in back of Kimmels. It will be fun to refresh my memory.
I'll share further details as I get them. Thanks Taffy for opening up this unknown territory of my heritage. Ya learn something every day...