Narrow Your Results

Filter Your Results

Smithsonian Secretaries Information

Close Browse records and papers of the Smithsonian Secretaries, from 1846 until today. Pre-set filters help narrow searches by individuals who have held that office.

Expeditions Information

Close Browse records and papers documenting scientific and collecting expeditions either affiliated with the Smithsonian, or with which Smithsonian researchers participated. Pre-set filters help narrow searches by geographic regions predominantly represented in expedition records.

Professional Societies Information

Close Browse records of professional societies closely associated with the Smithsonian, that focus on areas of scientific research and museum studies. Pre-set filters help narrow searches by major topics and disciplines.

Edith Kroupa

Science Service
Edith Kroupa
Austrian research chemist Edith Kroupa, 1934. The original caption dated September 18, 1934, reads: "While revolution upset Vienna, Miss Edith Kroupa, research chemist working with a new method of microchemical analysis in the laboratory of Prof. A. Franke at the University of Vienna, analyzed a sample of radioactive rock from near Winnipeg, Canada," determining it to be over 1,725,000,000 years old. Earlier that same year, Kroupa and her colleague Friedrich Hecht had discovered triple-weight hydrogen
Cite As:
Acc. 90-105 - Science Service, Records, 1920s-1970s, Smithsonian Institution Archives
Chemistry, Women scientists
Kroupa, Edith, University of Vienna
Black-and-White Prints
Local Number:
SIA Acc. 90-105 [SIA-SIA2008-4975]
Full Record:!siarchives&uri=full=3100001~!297365~!0#focus
Edith Kroupa, 1934, Smithsonian Institution Archives, SIA Acc. 90-105 [SIA-SIA2008-4975].

Using the Archives' Collections

The Smithsonian Institution Archives welcomes personal and educational use of its collections unless otherwise noted. Please cite the Smithsonian Institution Archives as the source of the content, and when possible, link to the Smithsonian Archives website ( Please let us know how you are using our collections for your projects. If you would like to see a collection in person, please note that most records and special collections are stored off-site, so researchers should contact the Reference Team at least one week prior to visiting to ensure that records can be made available in the Archives Reading Room. For information on commercial licensing or other uses, visit Rights and Reproductions. More information available within the Smithsonian’s Terms of Use policy.