Mt. Bullion
Placer discoveries in 1850 led to the establishment of La Mineta (Spanish for "little mine"). Rich quartz veins were soon located, and in 1852 the Princeton mine opened. Soon La Mineta was renamed Princeton and the town thrived.
In 1858 following the death of Senator Thomas H. "Old Bullion" Benton, from Missouri, the mountain just north of Princeton was renamed Mount Bullion in his honor; Benton's daughter was married to John C. Frémont, who owned the Rancho Las Mariposas in the area. When the post office was established in 1862 it took the name of Mount Bullion, though the town continued to be referred to as Princeton until that mine closed and the new name caught on. At its closure, the Princeton mine had produced nearly $5 million in gold - the largest producer in Mariposa County.
Today not much remains of Mt. Bullion's Gold Rush past, but a small community bearing the name still exists along Highway 49.