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1919- (in Ottowa since 1983)
1919-45 (in China)
1921-54 (in France)
1921-92 (possibly in West Germany)
1939-77 (in Paris)
1939-45 (in Paris, then London)
1939-90 (in London)
1940-44 (in London, then Algiers)
1941-45 (in London)
1941-44 (in London, then Cairo)
1943-45 (in Rangoon and Singapore)
1947- (in Berlin)
1948-59 (in Cairo)
1953-92 (in Oslo)
1958-62 (in Cairo, then Tunis)
1959- (in Dharamshala, India)
1966- (in the Netherlands)
1971-72 (in Calcutta, India)
1976- (in Algeria)
1981- (in Paris)
1982-92 (in Cambodia)
1990-2012 (in Maryland)
1991- (in Orange County, California)
1993- (in Washington, D.C.)
1995-2013 (in Garden Grove, Orange County, California)
2003- (in Oregon)
2004- (in Washington, D.C.)
2013- (in Maryland)
2010- (international)
2013- (in Turkey)