The Tejon Ranch Company (NYSE: TRC), based in Lebec, California, is one of the largest private landowners in California. The federally gifted lands still held by the Catellus Corporation, a successor to the Southern Pacific Land Company, are much more extensive. It was incorporated in 1936 to organise the ownership of a large tract of land originally comprising four Mexican land grants, and began ranching in the 1840s. It now controls over 270,000 acres (1,093 km²) in the southern San Joaquin Valley, Tehachapi Mountains, and Antelope Valley. Tejon Ranch grows almonds, pistachios, walnuts, wine grapes, and several varieties of row crops. Depending on the season, up to 12,000 head of cattle can be found grazing on the ranch.