1. Above Ground: Information on Artists III: Special Focus New York City Aging Artists Jeffri, Joan; Spiller, Michael W.; Heckathorn, Douglas D.; Simon, Jenifer 2007 Reports Older artistsPerforming artsDemography
2. Still Kicking: Aging Performing Artists in NYC and LA Metro Areas: Information on Artists IV Jeffri, Joan; Iguchi, Martin Y.; Penrose, William 2011 Reports Performing artsDemography