Hilda Williams, whose father, Scott T. Williams, also known as Chief Thundercloud, helped found the center with Ms. Power, said Ms. Power remained an icon in Chicago’s Native American community ...

A U.S. Postal Service Forever stamp now celebrates the Ponca chief, whose lawsuit led to a 1879 ruling that determined Native Americans were people with inherent rights under the law.

A U.S. Postal Service Forever stamp now celebrates the Ponca chief, whose lawsuit led to a 1879 ruling that determined Native Americans were people with inherent rights under the law.