It saw San Francisco grow from a small settlement into a city.
Colonel Richard Mason sent a report to the President about the early days of this event. This event began near New Helvetia. Samuel Brannan profited from this event. This period was sparked by James Marshall, who made a discovery at Sutter's Mill. The people who took part in this event were referred to as the 49ers. It saw San Francisco grow from a small settlement into a city. For 10 points, name this event in which people went to what is now a western state in hopes of finding a valuable metal.
Colonel Richard Mason sent a report to the President about the early days of this event.
California {Gold Rush} [or discovery of {gold} at Sutter's Mill before "{Sutter's Mill}" is read;