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 Mateo Creek (San Francisco Bay Area) San Mateo Creek (San Francisco Bay Area) San Mateo Creek ("Spanish for": St. Matthew Creek) is a perennial stream whose watershed includes Crystal Springs Reservoir, for which it is the only natural outlet after passing Crystal Springs Dam. After discovering San Francisco Bay from Sweeney Ridge on November 4, 1769, the Portolà expedition descended what Portolà called the "Cañada de San Francisco", now San Andreas Creek (or possibly San Mateo Creek), both of which emptied into the "Laguna Grande" where the party camped (now covered by the Upper Crystal Springs Reservoir). The Laguna Grande place name is also shown on