A young Kolthoff on vacation in the mountains, somewhere in Europe, ca. 1910s.

Izaak Kolthoff hiking in Europe

A young Kolthoff on vacation in the mountains, somewhere in Europe, ca. 1910s. Used with the permission of the University of Minnesota Department of Chemistry.

Izaak Kolthoff in retirement

Izaak Kolthoff in retirement

Izaak Kolthoff in retirement, ca. 1970s.

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 with University of Minnesota Chemistry Department faculty

Izaak Kolthoff with University of Minnesota Chemistry Department faculty

Izaak Kolthoff (front row, fourth from left) with University of Minnesota Chemistry Department faculty, 1934. Samuel Lind is at Kolthoff’s right. Used with the permission of the University of Minnesota Department of Chemistry.

Izaak Kolthoff with University of Minnesota President C. Peter Magrath at the dedication of Kolthoff Hall

Izaak Kolthoff with University of Minnesota President C. Peter Magrath

Izaak Kolthoff (left) with University of Minnesota President C. Peter Magrath at the dedication of Kolthoff Hall, 1972. Used with the permission of the University of Minnesota Department of Chemistry.

Official portrait of Minnesota Governor J. A. A. Burnquist, 1919. Painted by Carl A. Bohnen.

J. A. A. Burnquist

Official portrait of Minnesota Governor J. A. A. Burnquist, 1919. Painted by Carl A. Bohnen.

J. Edgar Hoover

J. Edgar Hoover

J. Edgar Hoover, director of the FBI during Hamm and Bremer kidnappings, in 1940. Hoover guided the FBI’s attempts to rid the US of “public enemies” like the Barker‒Karpis gang.

Black and white photograph of John Frank Wheaton, c.1900.

J. Frank Wheaton

John Frank Wheaton, c.1900. Photograph uploaded by Ancestry.com user LisaRoy 123.

Black and white photograph of J. H. Thomas, head of the Grange in Young America, 1873.

J. H. Thomas, head of the Grange in Young America

J. H. Thomas, head of the Grange in Young America, 1873.

J. Otis Powell‽, ca. 2014. Photograph by Eric Lorberer.

J. Otis Powell‽

J. Otis Powell‽, ca. 2014. Photograph by Eric Lorberer.

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