The city of San Bernardino is one of the oldest communities in the state of California, and in its present-day location, was not largely settled until 1851, after California became a state. The first Anglo-American colony was established by pioneers associated with The Church of Jesus Christ of Latter-day Saints or Mormons. Following the Mormon colonists' purchase of Rancho San Bernardino, and the establishment of the town of San Bernardino in 1851, San Bernardino County was formed in 1853 from parts of Los Angeles County. Mormons laid out the town based on the "City of Zion" plan which was typical of Mormon urban planning. Cities are typically laid out with North-South, East-West streets in predetermined city block sizes with wide streets. Often cities are laid out with an alphabetical and numerical system typical for Mormon towns, with streets running alphabet letters for North-South streets and numbers for East-West streets. Mormon colonists developed irrigated, commercial farming and lumbering, supplying agricultural produce and lumber throughout Southern California. The city was officially incorporated in 1857. Later that year, most of the colonists were recalled by Brigham Young in 1857 due to the Utah War. Once highly regarded in early California, news of the Mountain Meadows Massacre poisoned attitudes toward the Mormons. Some Mormons would stay in San Bernardino and some later returned from Utah, but a real estate consortium from El Monte and Los Angeles bought most of the lands of the old rancho and of the departing colonists. They sold these lands to new settlers who came to dominate the culture and politics in the county and San Bernardino became a typical American frontier town. Many of the new land owners disliked the sober Mormons, indulging in drinking at saloons now allowed in the town. Disorder, fighting and violence in the vicinity became common, reaching a climax in the 1859 Ainsworth - Gentry Affair.