In preparing the seismology section of the quadrennial U.S. National Report to the International Union of Geodesy and Geophysics (IUGG), the reference sections of 10 papers were merged. This combined bibliography of more than 2000 items was prepared by Carol K. Sullivan and is now available as U.S. Geological Survey Open-File Report 87–516. The seismology section of the report to IUGG was edited by Thomas C. Hanks and published in the July 1987 issue of Reviews of Geophysics.