No only Northwestern
The Sioux Indians did make masks. Many Native American tribes made masks. There were different types of masks for different purposes.
for special ceremonies
massaii
to act out different characters or spirits at events
Pacific Northwest Indians made masks for ceremonial and spiritual purposes, such as use in dances, rituals, and storytelling. These masks were believed to embody spiritual powers and connect the wearer to the natural and supernatural world. Masks were also used to depict important cultural stories, traditions, and characters within their communities.
on eBay, amazon and all other good English selling websites just type in slipknot all hope is gone masks. You can also make them.
look down ...... no
a luba mask is used in Ghana for celebration and in tribes things like that
Both the tribes used turquoise stone, gold and metal in their masks and jewellery.
they make 30,000,000 masks made in a year
Everytime they make a new album they change masks.
The Cherokee made buffalo masks, they were used in rituals.