Eugene Semmes Ives (1859-1917) was an Arizona attorney. Ives was originally from New York, and studied law and politics at Columbia Law School. In 1895, Ives and his family moved to Arizona Territory where he partnered with Marcus A. Smith and established his law practice in both Yuma and Tucson.
His collection contains case files including legal papers, notes and other material concerning Ives's cases. Included are files related to Albert Steinfeld, Epes Randolph, Louis Zeckendorf, and various mining, railroad, and power companies.