They were distributed to radio stations by Washington State University's tape network, a service that has been discontinued. I'm sure somewhere I can get them copied to audio diskettes, but the point is I no longer have the technology to listen to them and neither do most people. Now, after a run of only a quarter century or so, audio tape diskettes are rapidly being pushed off the market by the latest technological wave, compact discs. And the technology that will replace compact discs already is on the market. Before long, we'll all be listening to and viewing digital sound and pictures.
Home movies are fast falling victim to video cameras, and video cameras are about to go digital.
Video and audio formats are unstable and ephemeral - here today, gone tomorrow. Give me good old-fashioned paper any old day. I'm not discounting new technologies. They aren't good mediums for preservation.