1. Nevada magnetic and gravity maps and data, a website for the distribution of data Author/Creator: Kucks, R. P. Publication/Creation: [Reston, Va.?] : U.S. Geological Survey, 2006 Resource Type: Map Edition: Version 1.0. Access & Availability: Loading
2. Nebraska, Kansas, and Oklahoma aeromagnetic and gravity maps and data, a web site for distribution of data Author/Creator: Sweeney, Ronald E. Publication/Creation: [Reston, Va.?] : U.S. Geological Survey, [2005] Resource Type: Map Edition: Version 1.0. Access & Availability: Loading