San Francisco Ballet School Mateo, and Oakland. After Bolm left in 1937, new Opera ballet mistress Mildred Hirch added a fencing master during her year-long direction; Willam Christensen, previously director of the Oakland Branch School, became SF Opera ballet master and full school director in 1938. As San Francisco Opera Ballet expanded its touring schedule, it became increasingly difficult for Christensen to serve in both of his professional capacities. In 1940, his brother Harold Christensen took over the position of school director. In 1942, the two Christensen brothers purchased both the ballet company and the school from the Opera Association, renaming the company San
San Francisco Parks Trust San Francisco Parks Trust San Francisco Parks Trust was a U.S. non-profit organization dedicated to the preservation and enhancement of parks in San Francisco, California. In 2011 the San Francisco Parks Council and San Francisco Parks Trust merged to form the new San Francisco Parks Alliance. Founded in 1971 with a $50,000 grant from developer and philanthropist, Walter Shorenstein, San Francisco Parks Trust, formerly Friends of Recreation & Parks, began as an all-volunteer organization dedicated to supporting San Francisco parks. SFPT's offices are located in historic McLaren Lodge at the eastern end of Golden Gate Park, overlooking the City Tree