In 1876, he decided that an untapped market for hardware existed in the
gold rush town of
Deadwood, in the
Dakota Territory, so he moved there with friend and partner
Sol Star to open a hardware store. In August 1876 they purchased a lot and set up shop as "Office of Star and Bullock, Auctioneers and Commission Merchants," first in a tent and then in a building. According to a letter Bullock sent a friend, he arrived in Deadwood on August 3, 1876. If Bullock's letter is accurate, he never met Hickok. According to contemporary news accounts, McCall shot Hickok in the back of the head while he sat playing poker; McCall was found not guilty by an impromptu camp court, after which he promptly left town. McCall was later re-tried, found guilty, and executed. The demand for law enforcement grew following Hickok's murder. In February 1877 Lawrence County, which included Deadwood, was officially created by the Territorial Legislature. Territorial Governor
John L. Pennington appointed Bullock to be its interim sheriff until the first elections could be held in November. Bullock's tenure lasted approximately nine months. Bullock took the job seriously, deputizing several residents and tackling the job of civilizing the camp. Despite (or perhaps because of) a reputation for fearlessness and an uncompromising nature, Bullock managed the task without killing anyone. In fact, one of Bullock's first duties was to confront
Dodge City Deputy Marshal
Wyatt Earp, who was possibly interested in the sheriff's job. Bullock told Earp that his services were not needed. A week later, Earp left Deadwood to return to Dodge City. Bullock also famously had several "run-ins" with
Al Swearengen, proprietor of the notorious
Gem Theater, Deadwood's most notable
brothel. Swearengen had a knack for making money from vice and shrewdly invested some of his profits in cultivating alliances with the camp's wealthy and powerful. Bullock and Star purchased a ranch where Redwater Creek met the
Belle Fourche River and dubbed it the S&B Ranch Company. Bullock is also credited with introducing
alfalfa farming to Dakota in 1881. Later, he became a deputy U.S. Marshal, partnered with Star and Harris Franklin in the Deadwood Flouring Mill, and invested in
mining, the local growth industry. Bullock and Star eventually expanded their business interests to the towns of
Spearfish,
Sturgis, and
Custer. Bullock, then a deputy sheriff from
Medora, North Dakota, met
Theodore Roosevelt in 1884 while bringing a horse thief known as Crazy Steve into custody on the range, near what would become the town of
Belle Fourche. The two became lifelong friends, Roosevelt later saying of Bullock, "Seth Bullock is a true Westerner, the finest type of frontiersman." ==Belle Fourche and the Bullock Hotel==