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February 26, 2016

Nitrous

Filed under: Item of the Day — Jason Onerheim @ 12:01 am

A man tests out a dentist’s nitrous oxide machine in February, 1937.

This image forms part of our Minneapolis and St. Paul Newspaper Negative collection. Additional photographs in this series may be available in the library, please view the finding aid here.

For more information or to purchase a photograph of this item, view this photograph in our collections database.

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