Downloaded from: http://quake.utah.edu/regional-info/earthquake-catalogs Scroll to production catalogs, then Yellowstone Authoritative region earthquake 1982-March 31, 2018. There is a link to the .csv file. The direct link can is below: http://quake.utah.edu/wp-content/uploads/Yell_1982_2018Q1.csv Note: the YNP network was not operational 1982-1983, the few earthquakes from that time period were located with the Utah Network stations Had contact with Jamie Farrell from University of Utah: jamie.farrell@utah.edu ; fishynp@gmail.com The University of Utah Earthquake database for Yellowstone NP is more complete than other sources. Please contact Diana Krupnik - dkrupnik@uh.edu or dkrupnik89@gmail.com with any question about data sources, file organization, etc.