3 cabinet photographs on cardstock mounts. Mount rectos with printed copyright information. Versos with printed number, title, biographical information of subject, list of titles in series, and Bailey, Dix, & Mead credit. The photographs were taken by William R. Cross at Fort Randall during Sitting Bull's internment before being transferred to Standing Rock.

One Bull was a nephew of Sitting Bull, and a skilled warrior. The biographical description notes that he had to be knocked down and carried aboard a boat to be brought as a prisoner to Fort Randall. Steps was a Nez Perce who joined Sitting Bull's band of Uncpapa Sioux after escaping from his band in Nebraska ca 1878.

Cross (1839-1907), originally from Vermont, had moved west and initially operated a traveling tent studio in northeastern Nebraska. He settled in Niobrara and opened a studio on July 4, 1878, where he would remain for the next twelve years though he still traveled intermittently. Notably, he opened another studio at Fort Niobrara around 1886 and worked with his apprentice John A. Anderson at Fort Meade in 1888.