He became known beyond the Lakota in part through the book Black Elk Speaks (1932), written by John G. Neihardt from long talks with the shaman [REF].
The U.S. Board on Geographic Names officially changed the mountain's name from "Harney Peak" to "Black Elk Peak" on August 11, 2016, by a unanimous vote of 12-0, with one abstention [REF].