You can find several recordings of Dave (Kop) Elman's Hobby Lobby on the net for free.
If you want a CD version, you can get two Hobby Lobby shows from
The CD will cost you a whacking $5 and something like $2-50 shipping. and at that price, it won't break anyones bank.
The Hobby Lobby episode with the interview about the "liquid air" hobby is priceless and quite un PC in todays world.
I forgot to say, if you search on site otrcat for the word hypno, you will see a dozen or more show that are hyponosis related. While mostly fiction, (e.g. Murder by Hypnosis) the shows do give an insight to the way hypnotism was presented to, and perceived by, the masses at that time.
Also of interest is the show "Moon River". Read the blurb and have a listen to the content. Note the music, the effects (yawning etc), visualisation, affirmations and suggestions, and then while still using the hypnotic voice, slipping in adverts for the matresses / beds, hmmmm.