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Smithsonian National Museum of Natural History: Perfect Farming Soil Illustration from Dig It! The Secrets of Soil
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Smithsonian National Museum of Natural History: Frozen Soil Illustration from Dig It! The Secrets of Soil
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Smithsonian National Museum of Natural History: Volcanic Soil Illustration from Dig It! The Secrets of Soil
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Smithsonian National Museum of Natural History: Wetland Soil Illustration from Dig It! The Secrets of Soil
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Smithsonian National Museum of Natural History: Desert Soil Illustration from Dig It! The Secrets of Soil
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Smithsonian National Museum of Natural History: Forest Soil Illustration from Dig It! The Secrets of Soil
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Smithsonian National Museum of Natural History: Prairie Soil Illustration from Dig It! The Secrets of Soil
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Smithsonian National Museum of Natural History: SEM image of soil minerals
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Smithsonian National Museum of Natural History: Lifting out the Sunnyside monolith
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Smithsonian National Museum of Natural History: Cleaning and preparing the Sunnyside monolith for display
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Smithsonian National Museum of Natural History: Preparing to pull the Sunnyside monolith
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Smithsonian National Museum of Natural History: DC Soil Monolith Dig Sunnyside
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Smithsonian National Museum of Natural History: Illustration of a soil landscape
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Smithsonian National Museum of Natural History: Farmer's Dream Soil
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Smithsonian National Museum of Natural History: Bog Landscape