Sisters of St. Benedict in front of the Gardner family house

Sisters of St. Benedict in front of the Gardner family house

Sisters of St. Benedict in front of the Gardner family house (301 Summit Avenue, St. Paul) in 1948. Used with the permission of the Germanic-American Institute.

Photograph of St. Olaf College campus windmill

St. Olaf College campus windmill

St. Olaf College’s windmill. Photograph by David Gonnerman, 2007

Kolthoff, Izaak Maurits (1894–1993)

Izaak Maurits Kolthoff was a professor of analytical chemistry at the University of Minnesota from 1927 to 1962. He published over a thousand papers, wrote more than a dozen books, and created and edited the first comprehensive treatise of analytical chemistry. He also played a key part in the development of synthetic rubber during and after World War II. He is known as the “father of modern analytical chemistry.”

2014 Chemical Landmark Award program cover

2014 Chemical Landmark Award program cover

Cover of program for the event held to announce the winner of the Chemical Landmark Award, 2014. Izaak Kolthoff is pictured at top right. Used with the permission of the University of Minnesota Department of Chemistry.

Izaak Kolthoff

Izaak Kolthoff

Izaak Kolthoff, 1952. Used with the permission of the University of Minnesota Department of Chemistry.

Izaak Kolthoff lecturing in Russia, 1958.

Izaak Kolthoff lecturing in Russia

Izaak Kolthoff lecturing in Russia, 1958. Used with the permission of the University of Minnesota Department of Chemistry.

Izaak Kolthoff

Izaak Kolthoff

Izaak Kolthoff, 1932.

Photograph of Dr. John B. Dalton

Dr. John B. Dalton

Dr. John B. Dalton, 1936.

Lie-detector test

Lie-detector demonstration

Dr. J. B. Dalton demonstrating a lie-detector machine to Olivia Johnson, St. Paul Police Department, ca. 1935. Photograph by the St. Paul Daily News.

Photograph of Dr. John B. Dalton demonstrating a comparison microscope

Dr. John B. Dalton demonstrating a comparison microscope

Dr. John B. Dalton demonstrates a comparison microscope, ca. 1935.

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