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Tube showing 140 grams of powder, illustrating total estimated quantity of high purity radium in the world, of which the Standard Chemical Co. of Pittsburgh produced 72 grams, circa 1921

105790.jpg

105790

Tube showing 140 grams of powder, illustrating total estimated quantity of high purity radium in the world, of which the Standard Chemical Co. of Pittsburgh produced 72 grams, circa 1921

1921-11, approximate

Glass negatives

5 x 7

United States

Information on rights available at the repository.

105790

Citation

Unknown (photographer), “Tube showing 140 grams of powder, illustrating total estimated quantity of high purity radium in the world, of which the Standard Chemical Co. of Pittsburgh produced 72 grams, circa 1921,” AMNH Research Library | Digital Special Collections, accessed September 21, 2019, http://lbry-web-007.amnh.org/digital/index.php/items/show/84173.