William Deverell is Professor of History at the University of Southern California and Director of the Huntington-USC Institute on California and the West. He is the author of numerous publications including Land of Sunshine: The Environmental History of Metropolitan Los Angeles (with Greg Hise, 2005) and A Companion to Los Angeles (with Greg Hise, 2010).

David Igler is Professor of History at the University of California, Irvine, where he teaches courses in U.S., environmental, and California history. He is the author of The Great Ocean: Pacific Worlds .from Captain Cook to the Gold Rush (2013), and Industrial Cowboys: Miller & Lux and the Transformation of the Far West, 1850-1920 (2001).