Anybody interested in radio, BTW, should know that there are major museums in New York, Los Angeles, and Chicago.
The first two are branches of The Museum of Television & Radio; the Chicago one is the Museum of Broadcast Communication. It’s moving to a new location, so it will be closed for awhile.
Unfortunately, none of them have useful web sites, but they are unbelievably fascinating places to go visit.
A recording by a friend of him reading part of The Charge of the Light Brigade is on the British Library’s recent Spoken Words - Poets CD. Reputedly, he sounds drunk.
The earliest known recording of a human voice dates back to 1860. At the time, however, there was no way of playing it. It had to be scanned by a computer to reproduce the sound.