Review Essay: Expanding the Borders of Southern California Urban History: Dear, M., and Leclerc, G. (Eds.). (2003). Postborder City: Cultural Spaces of Bajalta California. New York: Routledge, pp. v, 306, illustrations, notes, index, $26.95 paper. Ford, L. R. (2005). Metropolitan San Diego. Philadelphia: University of Pennsylvania Press, pp. ix, 240, illustrations, notes, index, $49.95 cloth, $19.95 paper. Orsi, J. (2004). Hazardous Metropolis: Flooding and Urban Ecology in Los Angeles. Berkeley: University of California Press, pp. ix, 276, illustrations, notes, bibliography, index, $39.95 cloth. Sackman, D. C. (2005). Orange Empire: California and the Fruits of Eden. Berkeley: University of California Press, pp. ix, 386, illustrations, notes, bibliography, index, $45.00 cloth