NEW YORK — Klemens von Klemperer, a refugee from Nazi Germany who wrote what is widely considered the seminal history of the movement among the country’s conservative elite to overthrow Hitler, died Dec. 23 at his home in Easthampton, Mass. He was 96.
Professor von Klemperer, who had taught history at Smith College for nearly four decades, was one of a generation of refugee historians who helped lay the groundwork for modern German and European studies in the United States, a group that also included Hajo Holborn, Fritz Stern, and Peter Gay.
A privileged child who came from a family of German bankers and industrialists, Professor von Klemperer had taken a leading role in demonstrations against Hitler as a student in Vienna before fleeing to the United States in 1938.
The author of seven books, he was best known for his 1992 work, ‘‘German Resistance Against Hitler: The Search for Allies Abroad, 1938-1945.’’
On July 20, 1944, in the signature moment for the movement, Count Claus von Stauffenberg, a German army colonel, placed a briefcase containing a bomb under the map table at Wolfsschanze, Hitler’s headquarters in a bunker in East Prussia. Hitler survived the ensuing blast, attributing his survival to divine providence, and set off a wave of executions of conspirators.
Professor von Klemperer’s book explored the broader aims of the resistance movement and how its leaders — among them aristocrat Helmuth James von Moltke and theologian Dietrich Bonhoeffer, as well as diplomats and high-ranking military men — had made many contacts seeking support from the Western Allies.
‘‘He really charted the foreign contacts of that group; that’s the importance of von Klemperer’s work,’’ said Catherine Epstein, chairwoman of the history department at Amherst College and a specialist on German history. “These were very nationalistic resisters. They wanted to have an independent Germany, did not want to be occupied by the Allies.’’
‘He attempted to show that there were indeed good Germans, and that they were deeply, morally offended by the Nazis.’
Their outreach was thwarted by the Allies’ goal of unconditional German surrender and by a lack of trust in the resistance movement. Yet, for Professor von Klemperer, their efforts achieved a higher goal.
‘‘He attempted to show that there were indeed good Germans, and that they were deeply, morally offended by the Nazis,’’ said Allan Mitchell, who profiled Professor von Klemperer in his 2011 book ‘‘Fleeing Nazi Germany: Five Historians Migrate to America.’’ “That’s what was most important to him.’’
In ‘‘German Resistance Against Hitler,’’ Professor von Klemperer wrote, ‘‘The determination of the German Resistance to reach the ‘greater world’ stands as an example for the many dissidents and freedom movements who in our day, still plagued by oppression, are appealing to the conscience of the world.’’
Klemens Wilhelm von Klemperer was born in Berlin, into what had been a Jewish family until his grandfather, Gustav, the director of one of Germany’s largest banks, converted to Protestantism.
Klemens’s father, Herbert, was the president of a company that manufactured locomotives, submarines, and torpedoes for the German military.
That status and the family’s conversion mattered less and less after anti-Jewish laws were passed in 1933. In 1935, young Klemens joined his mother’s family in Vienna.
He studied history at the University of Vienna and, after Hitler’s annexation of Austria in March 1938, took part in student street protests. But by November, with his family’s property seized, he had fled to the United States. Eventually, members of his family were killed at Auschwitz.
He enrolled at Harvard University under a program for refugee scholars, but his studies were interrupted by his service as an intelligence officer in the US Army. After returning to Harvard, he received his doctorate in history in 1949 andjoined the faculty at Smith, where he taught for 37 years.
Among Professor von Klemperer’s other books are ‘‘A Noble Combat: The Letters of Shiela Grant Duff and Adam von Trott zu Solz, 1932-1938’’ (1988), about the romantic relationship of a British woman and a German diplomat as they struggled with their concerns about the Nazi regime, and ‘‘Ignaz Seipel: Christian Statesman in a Time of Crisis’’ (1972), a biography of an Austrian priest who became chancellor in the 1920s.
He retired from Smith in 1987 but continued to teach classes at Smith and Amherst colleges and the University of Massachusetts. At the time of his death, he still had an office at Smith.
His son, James, said he continued writing well into his 90s and was an avid outdoorsman. He was a lifetime member of the Appalachian Mountain Club and made annual trips to the White Mountains in New Hampshire.
In addition to his son, Professor von Klemperer leaves his wife of 59 years, Elizabeth, who also taught at Smith; a daughter, Catharine Utzschneider of Brookline; and four grandchildren.
A memorial service will be held at Smith at a later date.
Three years ago, Professor von Klemperer’s memoir, ‘‘Voyage Through the 20th Century,” was published.
‘‘I was not an extraordinary person, but I did live in extraordinary times,’’ he wrote, ‘‘and my small mission was somehow to make sense of it all.’’