Incoming Resources
- Harper Audio, New York, NY, 2022
- Blackstone Audio, Inc., Harper Audio, Ashland, Oregon, 2014
- Harper Audio, New York, 2015
- Blackstone Audio, Inc., Harper Audio, Ashland, Oregon, p2014
- Harper Audio, New York, p2004
- Harper Audio, New York, 2018
- Harper Audio, New York, 2021
- Harper Audio, New York, N.Y., p2008
- Harper Audio, New York, p2008