Rancho San Bernardino
Rancho San Bernardino was a 35,509-acre (143.70 km2) Mexican land grant in present-day San Bernardino County, California given in 1842 by Governor Juan B. Alvarado to José del Carmen Lugo, José María Lugo, Vicente Lugo, and Diego Sepulveda. The grant included a large part of the San Bernardino valley, and encompassed present-day San Bernardino, Fontana, Rialto, Redlands and Colton.
In 1810, Padre Francisco Dumetz, a priest from Mission San Gabriel, toured the area and gave it the name San Bernardino. Later emissaries from the mission established the Rancho as headquarters of farming activity in the area, with subsidiary farms such as Jumuba (established at the site of a native rancheria).
In January 1827, the exploring party of Jedediah Smith - first to reach California overland from the United States - spent several days in the area preparing for a return crossing of the Mojave Desert (having missed these settlements on the inbound journey)
After the Mexican secularization act of 1833 in 1841, Antonio Maria Lugo petitioned for a land grant in the name of three of his sons, José del Carmen Lugo, José Maria Lugo, Vicente Lugo, and José del Carmen's friend, Diego Sepulveda. In 1842, the eight square league Rancho San Bernardino was granted to Antonio Maria Lugo, his sons and his nephews, who grazed cattle in the area.
With the cession of California to the United States following the Mexican-American War, the 1848 Treaty of Guadalupe Hidalgo provided that the land grants would be honored. As required by the Land Act of 1851, a claim for Rancho San Bernardino was filed with the Public Land Commission in 1852, and the grant was patented to José del Carmen Lugo, José María Lugo, Vicente Lugo, and Diego Sepulveda in 1865.
In 1851, the Lugo family sold the Rancho to a group of almost 500 members of The Church of Jesus Christ of Latter-day Saints (Mormons) led by Captain David Seely (later first Stake President), Captain Jefferson Hunt and Captain Andrew Lytle, and included Apostles Amasa M. Lyman and Charles C. Rich.
- Ogden Hoffman, 1862, Reports of Land Cases Determined in the United States District Court for the Northern District of California, Numa Hubert, San Francisco
- Diseño del Rancho San Bernardino
- San Bernardino History - Jumuba
- Smith, Jedediah S., [Harrison G. Rogers], and George R. Brooks (ed.). The Southwest Expedition of Jedediah S. Smith: His Personal Account of the Journey to California, 1826–1827. Lincoln and London, University of Nebraska Press,  1989. ISBN 978-0-8032-9197-3
- United States. District Court (California : Southern District) Land Case 12 SD
- Report of the Surveyor General 1844 - 1886