California Gold
A large, rough mineral or rock specimen with a copper penny for size comparison, against a dark background.
A piece of mineral or ore next to a U.S. penny, with the text "AU - AIRPORT RD 3 COLUMBIA CA" at the bottom, on a dark blue background.
A cluster of mineral or geological material next to a U.S. penny for size comparison on a dark background. Text indicates location as Airport Road, Columbia, California.
Old black and white photo of an industrial site with buildings, a smokestack, and a roller coaster, labeled 'AU - ANGELS CAMP 1914'.
Historical black and white photo of a mining operation on a mountainside, showing a conveyor belt and steam or smoke rising from the site.
Old wooden playground slide in a wooded area at Coloma, California.
A penny placed next to a small white object with a fuzzy, textured top, on a dark blue surface.
Abandoned storefront with a faded green and blue facade and a rusted awning, surrounded by trees.
Old brick building with signs for Wells Fargo and Express, with a small balcony and trees around.
Old storefront with a sign reading 'Grocery Good' and a wooden sidewalk, surrounded by trees in Columbia, California.
A mineral specimen with gold-colored veins on white crystalline rock next to a U.S. penny for size comparison.
A piece of white mineral with gold-colored metallic veins, a U.S. penny for scale, and a dark background.
A copper penny placed on a white mineral sample with gold and metallic crystals, photographed against a dark background.
A mineral or ore specimen with a white crystalline base and dark metallic streaks, next to a US penny for size reference.
A dry riverbed with numerous rocks, surrounded by green trees and hills in the background.
Ruins of an old industrial site with collapsed structures and machinery, taken in 1934 at Doss Ginaca Xhornitos.
A black and white photo of the dredge ship 'AU' from 1953, partially submerged and resting in water with equipment and structures visible on its deck.
Several small coral branches and a penny for size comparison on a dark blue surface.
Coral fragment with a U.S. quarter coin placed nearby for scale on a dark blue surface.
Entrance to a tunnel through a hillside surrounded by green plants and foliage.
A horse harnessed and pulling a cart through a narrow, rocky cave or tunnel, with visible rock formations on the ceiling and walls.
Black and white photo of miners inside a tunnel, sitting and standing on a wooden platform, wearing hats and work clothes, during the Empire XGrass Valley mining operation in 1900.
A black and white photo of a railway track leading into a steep canyon with rocky cliffs on both sides, with a few people at the top of the cliff.
Old, rusted grinding mill with a tall vertical handle, situated outdoors in a grassy area with trees and rocks in the background.
A black and white photo of a rugged landscape with a railway track running through it, old train cars, and a few people near the tracks, with hilly terrain and some houses in the background.
Historical scene of hydraulic mining with workers using hoses and shovels in a rocky, forested landscape.
A historical black and white photo of a waterfall in Wyoming, with water rushing down a rocky slope, surrounded by trees, from 1914.
A small piece of white marble with a gold-colored mineral deposit on top, placed next to a penny for size comparison on a dark blue background.
A small piece of white marble with brownish mineral deposits, placed next to a penny for size comparison, on a dark blue surface. The text indicates it is from Columbia, California.
A small white marble with a gold-colored mineral or metal inclusion next to a penny for scale, on a dark blue background.
Historic black and white photo of men working with large pipes and machinery at a construction site, with waterfalls in the background, labeled 'AU - Michigan Bar 1860s'.
Lush green forested valley with a winding river and mountains in the background.
A mineral specimen of gold ore with a quarter for scale, labeled 'AU - MID FORK STANISLAUS'.
A piece of metallic mineral or ore with a copper-colored coin for size reference, placed on a blue background.
A small container with black foam holding several small gold-colored nuggets and a US penny for scale.
A small container with several small rocks and a penny for size comparison.
A dried sunflower head next to a penny on a blue background.
Two children near a makeshift tent made of fabric, located at a placer mining site in Columbia, California, with wooden structures and rocky terrain in the background.
Black and white photo of a landscape with multiple people walking along a fence or barrier, surrounded by rough terrain and scattered rocks.
A black and white photo of an outdoor scene with a small waterfall cascading from a rocky cliff, with trees in the background and some equipment or debris on the ground.
Black and white historical photo of miners at a rich diggings site with tools and wooden supports.
Close-up of a river grit abrasive wheel with a hose attachment on a rough surface.
Historical black and white illustration of miners working on a steep mountain trail in Campbell, with trees and rugged terrain.
Two hands hold a spatula over a cast iron skillet with two crispy chicken thighs.
Historical black and white scene of miners working outside a tailor shop at a mine site with wooden structures and trees in the background.
Three soldiers, one holding a shovel and another a helmet, stand near a makeshift bridge over a stream in a forested area, with a soldier crossing the bridge and two others watching.
Historic black and white photo of a mining site with buildings, a large crane, and mining equipment, circa 1900.
An outdoor scene with old water-powered tools, including large gears and a wheel, on a dirt path with grass and trees in the background.
Outdoor scene with large metal pipes and water tools on a dirt path surrounded by trees and grass.
A black-and-white historic photo of a mountainous landscape near Young America, Sierra City, dated 1885. The scene includes a river, pine trees, and a few buildings on a hillside.
A small pile of metallic silver-colored substance and a 1980 United States penny on a dark blue background.
A gold nugget next to a penny for size comparison on a dark background.
A small piece of rock or mineral with a rough, textured surface placed on a dark blue fabric background, with a penny showing its size.
A mineral specimen with a rough, crystalline surface placed on a penny for size reference, against a dark blue background.