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Between 1806 and 1817,mission site reconnaissance expeditions were led by Gabriel Moraga <br /> (1806, 1808), Father Ramon Abella(1811), Jose Antonio Sanchez(1811), and Father Narciso <br /> Duran (1817) (Rensch et al. 1990). <br /> The first Euro-American to traverse the area was likely Jedediah Strong Smith,who <br /> opened the Sacramento Trail in the late 1820s. Smith reported to the Hudson's Bay Company <br /> about the quantity and quality of furs available in California, and in 1828, the company sent its <br /> first trapping expedition. Trappers working for Hudson's Bay Company established the <br /> settlement of French Camp south of the modern city of Stockton(Rensch et al. 1990). <br /> The San Joaquin Valley remained largely unsettled during the Spanish and Mexican _ <br /> Periods. Mexican land grants common to many coastal counties were sparsely scattered along <br /> the San Joaquin Valley. In fact,much of the region consisted of public lands. Following _ <br /> California's gold rush, settlement of the San Joaquin Valley gradually increased as former gold <br /> seekers realized the potential for crop production(initially wheat and later row/orchard crops) <br /> and cattle raising in the region. Many small towns were founded in the San Joaquin Valley _ <br /> because railroad development throughout the area provided access, goods, and employment; in <br /> turn, these small towns further influenced settlement patterns in the area. The region has <br /> historically been used for agricultural and ranching practices, and these practices continue into _ <br /> the present(Jones & Stokes 2002). <br /> The city of Tracy began in 1878 as a railroad town to connect the growing Central Pacific <br /> and Southern Pacific Railroads. In 1869, Central Pacific Railroad laid railroad tracks from <br /> Sacramento through present-day Tracy and over the Altamont Pass to the San Francisco <br /> Peninsula. As was common along railroad alignments statewide, small railroad towns sprang up — <br /> along the line, including Lathrop (near Stockton) and Ellis at the base of the Altamont Pass. In <br /> 1878, a Southern Pacific railroad line was constructed from Oakland through Martinez to <br /> connect with the Central Pacific just east of Ellis. A station was established in present-day Tracy — <br /> and named after Lathrop J. Tracy, a railroad official. Given its location within the agricultural <br /> region, the new community of Tracy grew as a railroad center. In 1894, railroad headquarters <br /> were moved from nearby Lathrop to Tracy. — <br /> Tracy formally incorporated in 1910, and the new city grew rapidly after the first <br /> irrigation district was established in 1915. Although railroad operations began to decline during <br /> the early- to-mid-twentieth century, Tracy and the surrounding area continued to prosper as an <br /> agricultural region. <br /> DeSilva Gales Quarry Project,San Joaquin County Cultural Resources Inventory Report <br /> Community Development Department 5 November 2005 _ <br /> AS 0&105 <br />