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The Miriam and Ira D. Wallach Division of Art, Prints and Photographs: Photography Collection, The New York Public Library. "Chemical cabinet in assaying office at Two Bit Creek. Note the cupels for accommodating sample ore, South Dakota" The New York Public Library Digital Collections. 1937. https://digitalcollections.nypl.org/items/3193ac70-0221-0137-82f9-2f79589519fa
The Miriam and Ira D. Wallach Division of Art, Prints and Photographs: Photography Collection, The New York Public Library. "Chemical cabinet in assaying office at Two Bit Creek. Note the cupels for accommodating sample ore, South Dakota" New York Public Library Digital Collections. Accessed January 16, 2025. https://digitalcollections.nypl.org/items/3193ac70-0221-0137-82f9-2f79589519fa
The Miriam and Ira D. Wallach Division of Art, Prints and Photographs: Photography Collection, The New York Public Library. (1937). Chemical cabinet in assaying office at Two Bit Creek. Note the cupels for accommodating sample ore, South Dakota Retrieved from https://digitalcollections.nypl.org/items/3193ac70-0221-0137-82f9-2f79589519fa
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(still image)
Chemical cabinet in assaying office at Two Bit Creek. Note the cupels for accommodating sample ore, South Dakota, (1937)|author=Digital Collections, The New York Public Library |accessdate=January 16, 2025 |publisher=The New York Public Library, Astor, Lenox, and Tilden Foundations}}</ref>