Mount Shasta has also been a focus for non-Native American legends, centered on a hidden city (called Telos) of advanced beings from the lost continent of Lemuria. The legend grew from an offhand mention of Lemuria in the 1880s[by whom?] . In 1899, Frederick Spencer Oliver published A Dweller on Two Planets, which claimed that survivors from a sunken continent called Lemuria were living in or on Mount Shasta. Oliver's Lemurians lived in a complex of tunnels beneath the mountain and occasionally were seen walking the surface dressed in white robes. In 1931, Harvey Spencer Lewis, using the pseudonym Wisar Spenle Cerve, wrote a book (published by the Rosicrucians) about the hidden Lemurians of Mount Shasta that a bibliography on Mount Shasta described as responsible for the legend's widespread popularity.