Blackfoot Piegan medicine man and pipe. In passing the pipe when smoking, it goes from the host, who takes the first smoke, to the left, passing from hand to hand to the door. It may not be passed across the door to the man on the other side, but must come back, no one smoking, pass the host, and go round to the man across the door from the last smoker. A person entering a lodge where people are smoking must not pass in front of them, that is, between the smokers and the fire. Photo by Edward S. Curtis, 1910. Vintage image restored by Kathy Weiser-Alexander.