There are few places where mobility has shaped identity as widely as the American West, but some locations and populations sit at its major crossroads, maintaining control over place and mobility, labor and race. In <I>Collisions at the Crossroads, </I>Genevieve Carpio<I> </I>argues that mobility, both permission to move freely and prohibitions on movement, helped shape racial formation in the eastern suburbs of Los Angeles and the Inland Empire...