Harriet Zetterberg’s path to international service began in Valley City, North Dakota. A graduate of Valley City public schools, she attended State Teachers College for two years before transferring to Carleton College in Minnesota. There, she graduated magna cum laude, earned a Phi Beta Kappa key, and went on to complete a master’s degree and law training at the University of Wisconsin in Madison. An honor student, she was elected editor-in-chief of the Wisconsin Law Review in 1941. After additional graduate study at Yale, Zetterberg joined the legal department of the U.S. State Department in Washington, D.C.

In 1945, she was assigned overseas, first to London as part of the legal department of the economic warfare division at the American Embassy, and later to Germany. Zetterberg became a member of the prosecution staff at the Nuremberg war crimes trials, where Allied prosecutors presented evidence against twenty-one top Nazi leaders charged with crimes against humanity.

The evidence introduced at Nuremberg was graphic and unprecedented. Among the exhibits presented to the International Military Tribunal were a preserved human head and lampshades made from human skin, submitted as proof of atrocities committed in Nazi concentration camps. Prosecutors also introduced death ledgers from camps such as Mauthausen, documenting tens of thousands of killings, along with reports of executions of Allied prisoners and civilians.

Zetterberg worked behind the scenes helping assemble the legal record that supported these charges. In letters from Nuremberg, she reflected on the difficulty of capturing such crimes within the confines of law. “It’s so important that people realize that individuals can’t get away with planning and executing a program of the kind the Nazi’s planned and put into operation,” she wrote. Yet she also acknowledged the limits of legal language, noting that Nazi crimes were “too vast ever to be condensed into a trial brief.”

She described exhausting work schedules and a sense of isolation from the outside world, writing that the staff worked nearly every night. At the same time, she and her colleagues tried to help survivors returning to the city, asking family members in the United States to send clothing because former concentration camp prisoners had simply nothing in the world.

After completing her service at Nuremberg, Harriet Zetterburg returned to the United States. Her work placed a Valley City native at the center of one of the most important legal proceedings of the twentieth century. At a time when women were still rarely seen in senior legal and government roles, Zetterberg pushed beyond the professional boundaries commonly imposed on women of her generation. Her presence on the prosecution staff reflected both her exceptional qualifications and her determination to pursue work that few women were encouraged or permitted to undertake. Her career stands as a reminder that persistence and education could open doors even in restrictive times, and her life remains an example to women not to abandon their ambitions.