The Firesign website will be podcasting a lot of bits from
a February 1970 Hour Hour show, recorded using stone knives
and bearskins by Firehead Cat Simril Ishikawa live, as it
happened.

Clips from the first hour are up now, including impromptu
bits of Archie & Jughead & communism (just two months before
DWARF was written and performed), "23 Skid Row", which
foreshadows Mutt & Smutt's unusual inventory, and Clayton
Rumcake, a Proctor radio character who never appeared on
a Firesign album.

The podcasting directory is here:
http://www.firesigntheatrelegacy.com/podcasting

If you don't grok podcasting, you can just download MP3s here:
http://www.firesigntheatrelegacy.com/podcasting/list.php

Billville - the town that nature forgot to hate
  -- Firesign Theatre