Hebrew Union College (HUC), founded in Cincinnati in 1875, is the oldest institution of higher Jewish learning in the United States. Its founder, Rabbi Isaac Mayer Wise (1819-1900), was a leading proponent of Reform Judaism in America. In 1950, the college merged with the Jewish Institute of Religion (JIR), a liberal Jewish seminary in New York founded by Rabbi Stephen S. Wise (1874-1949) in 1922. A third center opened in Los Angeles in 1954 to serve Jewry on the West Coast and, in 1963, a fourth campus opened in Jerusalem. As of 2003, HUC-JIR educates rabbis, cantors, communal, and educational professionals. It also offers advanced academic training for scholars of all faiths. The holdings of the school's Klau Library constitute one of the most extensive Jewish libraries in the world.