Elisa Barbour, of the Public Policy Institute of California (PPIC) in San Francisco, recently published a comprehensive study on regional planning, "Metropolitan Growth Planning in California, 1900-2000."
In her study, Barbour says that California has tried to create stronger metropolitan planning institutions for 100 years. She calls the most recent surge of regionalism the "third wave," after the establishment of home rule, and the rise of single-purpose agencies.