Standard Oil Standard Oil Standard Oil Co. Inc. was an American oil producing, transporting, refining, and marketing company. Established in 1870 by John D. Rockefeller and Henry Flagler as a corporation in Ohio, it was the largest oil refinery in the world of its time. Its history as one of the world's first and largest multinational corporations ended in 1911, when the United States Supreme Court, in a landmark case, ruled that Standard Oil was an illegal monopoly. Standard Oil dominated the oil products market initially through horizontal integration in the refining sector, then, in later years vertical integration; the company was
Midwest Oil Company Hotel Midwest Oil Company Hotel The Midwest Oil Company Hotel, at 136 East 6th Street in Casper, Wyoming, is an historic hotel building which was listed on the National Register of Historic Places in 1983. It has also served as the Casper Women's Club House. Originally built by the Midwest Oil Company to accommodate workers during the Casper oil boom, it was taken over by Standard Oil Company of Indiana when that company bought Midwest Oil. In the 1930s, in the waning days of oil production in Natrona County, a local women's organization bought the hotel for $8,000 and was renamed