The exhibit “A Song for the Horse Nation,” at the museum through Jan. 7, showcases tangible evidence of the animal’s influence on native society. Here, curator Emil Her Many Horses highlights pieces from the exhibit. — Kris Coronado
Porcupine quills decorate this mid-1800s Cheyenne horse mask. To make the quills more pliable, the maker would soak them “in their mouths and bite them to flatten them,” says Emil Her Many Horses, a curator at the museum ( Fourth Street and Independence Avenue SW, 202-633-1000, nmai.si.edu). Then the quills are flattened and sewn onto the hide. Benjamin C. Tankersley/FOR THE WASHINGTON POST
President Trump and first lady Melania Trump lit the National Christmas Tree for the first time. The program was hosted by television personality Kathie Lee Gifford and actor Dean Cain and featured performances by the Beach Boys, Jack Wagner, Wynonna Judd, Craig Campbell and others.