The Mule from Foundation and Empire (read by Isaac Asimov), 1981

The Mule from Foundation and Empire (read by Isaac Asimov), 1981, Box: 05. Larry Shaver, Collector, Isaac Asimov Collectibles, A&M 3441. West Virginia and Regional History Center. https://archives.lib.wvu.edu/repositories/2/archival_objects/78623 Accessed January 16, 2026.