Sa-Zitkala: - Zitkala-Sa was a writer, editor, translator, musician, teacher, and activist from the Yankton Dakota tribe. The Sun Dance Opera, the first American Indian opera, has a libretto written by her. co-founded the National Council of American Indians to advocate for the citizenship of Native Americans. She was born on February 22, 1876, in South Dakota. From 1884 until 1887, she was a student at a Quaker missionary boarding school in Wabash, Indiana. The School Days of an Indian Girl, a later work of hers, contains a description of this period. Zitkala-a returned to the Yankton Reservation in 1891 to pursue music studies. From 1897 to 1899, Zitkala-a studied violin at the New England Conservatory of Music. In 1901, she ended her engagement with Yavapi (Mohave-Apache) Indian Carlos Montezuma. To take care of her ailing mother and compile stories for a book, Zitkala-a went back to the Yankton Reservation. She fell in love with and wed Raymond Talephause Bonnin, a BIA employee stationed at the Utah Uintah-Ouray tribe, in 1902. Zitkala-Sa was one of the most persuasive Native American activists of the twentieth 100 years. She passed away in Washington, D.C., on January 26, 1938, at the age of 61. She is honored with a crater on Venus named after her.