- AK - Alaska Earthquake Center
- AT - National Tsunami Warning Center
- ATLAS - ShakeMap Atlas
- AV - Alaska Volcano Observatory
- CHOY - Energy Magnitude and Broadband Depth
- CI - California Integrated Seismic Network: Southern California Seismic Network (Caltech/USGS Pasadena and Partners) and Southern California Earthquake Data Center
- DUPUTEL - Duputel et al. W phase catalog
- EQH - EQH - Coffman, von Hake and Stover, Earthquake History of the United States
- GCMT - Lamont-Doherty Earth Observatory Global CMT project, New York, USA
- HV - Hawaiian Volcano Observatory
- ISCGEM - ISC-GEM Main Catalog
- ISCGEMSUP - ISC-GEM Supplementary Catalog
- ISMPKANSAS - USGS Induced Seismicity Project (Kansas)
- LD - Lamont-Doherty Cooperative Seismographic Network
- MB - Montana Bureau of Mines and Geology
- NC - California Integrated Seismic Network: Northern California Seismic System (UC Berkeley, USGS Menlo Park, and Partners)
- NE - New England Seismic Network
- NM - New Madrid Seismic Network
- NN - Nevada Seismological Laboratory
- OFFICIAL - USGS Earthquake Magnitude Working Group
- PAGS - PAGS - Pennsylvania Geological Survey
- PR - Puerto Rico Seismic Network
- PT - Pacific Tsunami Warning Center
- RDEMINERAL - Refined Determination of Epicenters (Mineral, VA)
- SE - Center for Earthquake Research and Information
- US - USGS National Earthquake Information Center, PDE
- USHIS - USHIS - Stover and Coffman, Seismicity of the United States, 1568-1989
- UU - University of Utah Seismograph Stations
- UW - Pacific Northwest Seismic Network