The following is a timeline of the history of the city of Las Vegas, Nevada, United States. The Spanish Trader Antonio Armijo led a 60-man party along the Spanish Trail to Los Angeles, California in 1829 and found a natural steam water Land that was named Las Vegas. 20th century 1900s–1950s 1900 The population of Las Vegas, six years before it is founded as a city, is 22. 1905 Las Vegas is founded as a city on May 15 when 110 acres (45 ha) of land adjacent to the San Pedro, Los Angeles and Salt Lake Railroad tracks are auctioned off by the railroad company. The areas that were auctioned off were situated between Stewart Avenue on the north, Garces Avenue to the south, Main Street to the west, and 5th Street (Las Vegas Boulevard) to the east and would later become the downtown area. 1905 San Pedro, Los Angeles and Salt Lake Railroad begins operating, linking Southern California with Salt Lake City and making Las Vegas an ideal refueling point and rest stop due to the availability of water. 1906 Las Vegas & Tonopah Railroad built. 1909 Las Vegas becomes seat of Clark County. Clark County Review newspaper begins publication. Las Vegas Evening Review and Journal newspaper in publication. 1910 Victory Hotel in business. 1911 June 1: Citizens of Las Vegas vote 168 to 57 in favor of incorporation. June 1: Peter Buol is elected first mayor of Las Vegas, Stewart, VonTobel, McGovern and Gaughlin become city commissioner and assure a "conservative city government". 1920 Population: 2,304. 1930 Population: 5,165. 1931 Gambling legalized. Hoover Dam construction begins near Las Vegas. 1933 Post Office built. 1934 Helldorado festival begins. 1940 Population: 8,422. Las Vegas Union Pacific Station built. 1941 Las Vegas Army Airfield activated. 1943 Las Vegas YMCA active. 1944 Huntridge Theater built. 1946 Flamingo Hotel and Golden Nugget casino in business. 1949 The Desert Sea News Bureau is established to promote the city, and is later renamed the Las Vegas News Bureau. 1950 Population: 24,624. U.S. military Nellis Air Force Base dedicated. Las Vegas Morning Sun newspaper begins publication. Desert Inn casino in business. 1951 Binion's Horseshoe casino in business. 1952 Unitarian Universalist Congregation founded. Sahara Hotel and Casino in business. Sands Hotel and Casino in business. 1953 City of Henderson chartered in vicinity of Las Vegas. KLAS-TV, Las Vegas' first television station, signs on the air. 1955 Riviera