Edward F. O'Day. The Founding of San Francisco. San Francisco Water. Spring Valley Water Authority. October 1926 [February 14, 2009]. (原始内容存档于July 27, 2010).
Edward F. O'Day. The Founding of San Francisco. San Francisco Water. Spring Valley Water Authority. October 1926 [February 14, 2009]. (原始内容存档于July 27, 2010).