The following publications contain information about Black Elk:
Article: "Ghosts on the Little Bighorn" by Robert Paul Jordan • After a 1983 prairie fire cleared brush along Montana's Little Bighorn River, archaeologists recovered artifacts that shed new light on Custer's Last Stand. Robert Paul Jordan reports on the still controversial 1876 battle. Photographs by Scott Rutherford • National Geographic Magazine • December 1986.
Article: "Nicholas Black Elk: Prophet to Lakota a sign of hope today" by Damian Costello • CatholicPhilly.com • Posted April 15, 2019 • Accessed April 20, 2019.
Article: "Nicholas Black Elk's gift of sweetgrass" by Damian Costello • Catholic Star Herald • http://catholicstarherald.org/ • Posted May 2, 2019 • Accessed May 4, 2019.
Article: "Nicholas Black Elk, Sr." • Faces of Little Bighorn: The David Humphreys Miller Collection • Accessed June 29, 2020.