First settled in the summer of 1848 by a party of miners from Sonora, Mexico, the place was logically named Sonorian Camp, later shortened to Sonora. The area was one of rich placers; contemporary reports tell of three Frenchmen who took out three and a half pounds of gold in less than three hours work. At a spot known as Holdens Gardens, a party of eight men unearthed the famous Holden Chispa, a gold nugget weighing over twenty-eight pounds. The owners turned down an offer of $4,500 at the time of the discovery. When all the mining was panned and done, the placers had produced over $11 million in gold.