The Denver Post has a display of Grabill prints, shot largely in the Black Hills area in the 1880s and '90s.
From the webpage...: Between 1887 and 1892, John C.H. Grabill sent 188 photographs to the Library of Congress for copyright protection. Grabill is known as a western photographer, documenting many aspects of frontier life — hunting, mining, western town landscapes and white settlers’ relationships with Native Americans. Most of his work is centered on Deadwood in the late 1880s and 1890s. He is most often cited for his photographs in the aftermath of the Wounded Knee Massacre on the Pine Ridge Indian Reservation.
The one below illustrates what my great-grandfather did in the Black Hills from 1876 to about 1885. He ran freight outfits like this between Cheyenne and Deadwood and between Pierre and Deadwood. I have been told that there are a few copies of a postcard from the era identified on the card as being a picture of the "James A. Newland and his bull team (oxen) freight company." I sure would like to get my hands on one of those cards.
There is a really nice shot of a hitched-up bull team waiting on the street in Sturgis, too.
Go look at 'em.