The Riordan Family ID: 1007 | This file appears in: The Riordan Mansion State Historic Park From left to right: Michael, Nell, Denis Matthew, Timothy. | Source: Riordan, Richard, from Northern Arizona University. “Oral History Interview with Richard and Beatrice Riodan [with transcript and photographs], June 15, 1976,” available at http://archive.library.nau.edu/cdm/singleitem/collection/cpa/id/64437/rec/12. Download Original File SourceRiordan, Richard, from Northern Arizona University. “Oral History Interview with Richard and Beatrice Riodan [with transcript and photographs], June 15, 1976,” available at http://archive.library.nau.edu/cdm/singleitem/collection/cpa/id/64437/rec/12. "The Riordan Family " appears in: The Riordan Mansion State Historic Park