The Flying V Ranch was established in 1921 as a dude ranch, but was sold in 1935 to Gustav Koven and Paul Petzoldt, who intended to operate the ranch as a climbing school. After changing the name to the Ramshorn Dude Ranch, the partnership fell apart. After acquisition by the Park Service in 1956 the Ramshorn was operated as a concession under the Elbo Ranch name, which had been displaced from its previous location at the foot of the mountains when the original Elbo-Manges ranch was purchased and used for Park Service personnel housing. The Ramshorn now houses the Teton Science School. Another 1920s establishment was Leek's Lodge on upper Jackson Lake, close to the AMK, which continued to operate as a concession associated with the Signal Mountain Lodge into the 1970s. Although the Park Service had removed most of the buildings, the main lodge stood until 1998, when it was destroyed by fire, leaving only the lodge's chimney standing. The original Jackson Lake Lodge was established nearby by Eugene Amoretti, and featured the first hot and cold running water in the valley. It was replaced by the present Jackson Lake Lodge in 1955.