Edwin W. Tooker and David J. Beeby, compiler-editors ; prepared in cooperation with the California Department of Conservation, Division of Mines and Geology
contributions from City of San Francisco, Director of Emergency Services, National Science Foundation, Research Applications Directorate, State of California Office of Emergency Services Seismic Safety Commission, U.S. Department of the Interior Assistant Secretary for Energy and Minerals Geological Survey, and, University of California at Los Angeles, Department of Sociology
edited by David A. Nimick and Paul von Guerard ; organized and prepared jointly with the Bureau of Land Management and the U.S. Department of Agriculture Forest Service