The Eiteljorg Museum has one of the country's premier collections of American Indian art and artifacts housed in it's own facility rather than tucked into a corner with other exhibits.
The intricate beadwork on these garments is amazing and a careful look shows the sign of wear and tear that these were actually used and not just something made to sucker the tourists. It should be obvious the bison and the glass etching below are not artefacts, but I believe they were commissions by Indian artists for the museum.