Iron Tail [SEP] cause of death
a table he now sat beside, while the many white folks occupied the dining-room, where they could discuss Indians without embarrassment. This, he remembered, was a good time, and they talked about it for a long time together, but now, his good friend had left him and was in the Sand Hills."
Final days.
In May 1916, Chief Iron Tail, at the age of 74, became ill with pneumonia while performing with the Miller Brothers 101 Ranch Wild West in Philadelphia,
like a statue, he suddenly swept the table clean into his blanket and rose from the table and strutted away. It was a piece of superb acting, and exceedingly funny." Iron Tail continued to travel with Buffalo Bill until 1913, and then the Miller Brothers 101 Ranch Wild West until his death in 1916. 
Iron Tail and Gertrude Käsebier.
Iron Tail and Gertrude Käsebier Photographing the Sioux.
Gertrude Käsebier was one of the most influential American photographers of the early 20th century and best known for her evocative images