Inspired by the life of Franz Rosenzweig, he left traditional academia in 1974 to cofound Lehrhaus Judaica, which was named after Rosenzweig's Freies Juedisches Lehrhaus, which was founded in 1920, and closed by the Nazis 18 years later. Lehrhaus Judaica has been described as "a continuing-education program affiliated with Berkeley Hillel" Rosenbaum was then a graduate student at the University of California Berkeley, and cofounded Lehrhaus Judaica with Seymour Fromer of the Judah L. Magnes Museum and Rabbi Steven Robbins of Berkeley. Described as a "new program of Jewish adult education" in 1988, in 1998, it was called "The grandparent of community adult learning institutions".
Observations on Northern California Jewish history
Rosenbaum has expressed the opinion that anti-semitism was less of a factor affecting the Jews of Northern California than in most other areas of the world. "Perhaps most remarkable was the uncommon degree of acceptance, indeed respect, accorded San Francisco Jewry by the larger society". Another group, the Asians bore the brunt of social ostracism in the region. He noted that "it was the Asians who were abused during these years of turmoil; they and not the Jews became the scapegoats". Rosenbaum's most recent book, Cosmopolitans: A Social and Cultural History of the Jews of the San Francisco Bay Area, a comprehensive history of the first 100 years of the Jewish community of the San Francisco Bay Area, has been widely reviewed. According to the San Francisco Chronicle, Rosenbaum "researched his subject over several decades." The reviewer of the book observed that "his dedication to the topic is evident in its encyclopedic scope".
Publications
Taking risks: a Jewish youth in the Soviet partisans and his unlikely life in California, Joseph Pell and Fred Rosenbaum, Muskegon, Michigan, RDR Books, 2004
Free to choose: the making of a Jewish community in the American West: the Jews of Oakland, California from the gold rush to the present day, Fred Rosenbaum, Berkeley, California, Judah L. Magnes Museum, 1976
Architects of reform: congregational and community leadership Emanu-El of San Francisco, 1849-1980, Fred Rosenbaum, Berkeley, California, Western Jewish History Center, Judah L. Magnes Museum, 1980
Here, There Are No Sarahs: A Woman's Courageous Fight in the Soviet Partisans and Her Bittersweet Fulfillment of the American Dream, Sonia Shainwald Orbuch and Fred Rosenbaum, Muskegon, Michigan, RDR Books, 2009
"The Pope Comes to San Francisco: An Anatomy of Jewish Communal Response to a Political Crisis", by David Biale and Fred Rosenbaum, in American pluralism and the Jewish community, editor: Seymour Martin Lipset, New Brunswick, New Jersey, Transaction Publishers, 1990, described as "a fascinating and insightful account of the playing out of the confrontational style around a Holocaust issue".
