the increased tourism, dude ranches were established, some new and some from existing cattle ranches, so urbanized travelers could experience the life of a cattleman. Establishment of the park To the north of Jackson Hole, Yellowstone National Park had been established in 1872, and by the close of the 19th century, conservationists wanted to expand the boundaries of that park to include at least the Teton Range. By 1907, in an effort to regulate water flow for irrigation purposes, the United States Bureau of Reclamation had constructed a log crib dam at the Snake River outlet of Jackson Lake. This dam failed in 1910 and a new concrete Jackson Lake Dam replaced it by 1911. The dam was further enlarged in 1916, raising lake waters as part of the Minidoka Project, designed to provide irrigation for agriculture in the state of Idaho. Further dam construction plans for other lakes in the Teton Range alarmed Yellowstone National Park superintendent Horace Albright, who sought to block such efforts. Jackson Hole residents were opposed to an expansion of Yellowstone, but were more in favor of the establishment of a separate national park which would include the Teton Range and six lakes at the base of the mountains. After congressional approval, President Calvin Coolidge signed the executive order establishing the Grand Teton National Park on February 26, 1929. The valley of Jackson Hole remained primarily in private ownership when John D. Rockefeller Jr. and his wife visited the region in the late 1920s. Horace Albright and Rockefeller discussed ways to preserve Jackson Hole from commercial exploitation, and in consequence, Rockefeller started buying Jackson Hole properties through the Snake River Land Company to later turn them over to the National Park Service. In 1930, this plan was revealed to the residents of the region and was met with strong disapproval. Congressional efforts to prevent the expansion of Grand Teton National Park ended up putting the Snake River Land Company's holdings in limbo. By 1942 Rockefeller had become increasingly impatient that his purchased property might never be added to the park, and wrote to the Secretary of the Interior Harold L. Ickes that he was considering selling the land to another party. Secretary Ickes recommended to President Franklin Roosevelt that the Antiquities Act, which permitted presidents to set aside land for protection without the approval of Congress, be used to establish a national monument in Jackson