This 12" 33rpm acetate turned up on eBay in the early summer and sold for $2,750.00 on June 2nd 2011. The recording comes from Forest Hills 17th August 1963. 'Only A Pawn In Their Game' and 'A Hard Rain's A Gonna Fall' are not in circulation. As of the time of writing, the recordings from this acetate are not available to listen to, unfortunately.
Thanks to Bob S. for pointing out that I had got the date slightly wrong..by 1 year and also the following which comes from http://www.searchingforagem.com:
Glen Dundas' 2004 information for the concert's Dylan portion:
Forest Hills Music Festival
Forest Hills Tennis Stadium
New York City, NewYork
August 17, 1963
Guest appearance at a Joan Baez Concert.
1. Only A Pawn In Their Game *
2. A Hard Rain's A-Gonna Fall *
3. Farewell (a) *
4. Troubled And I Don't Know Why (a)
5. Blowin' In The Wind (a) (cut)
(a) Bob Dylan (vocal & guitar) and Joan Baez (vocal & guitar).
4 released on JOAN BAEZ: RARE, LIVE & CLASSIC, Vanguard VCD3-125/27, 31 August 1993.
4, 5 Incomplete stereo PA recording, 7 minutes.
Form the description:
A LIVE ACETATE OF A RECORDING PROFESSIONALY MIXED OF JOAN BAEZ & BOB DYLAN IN CONCERT FROM AROUND 1963? DON'T HAVE MUCH INFO ON THIS BUT THE SOUND IS EXCELLENT AND I THINK THIS IS RARE AS HENS TEETH! STARTS OFF WITH (ON THE JOAN BAEZ SIDE) WITH HER SINGING,A VERSION OF DYLAN'S 'DON'T THINK TWICE" then introduces Bob and he sings "Only a Pawn in the Game" THEN TALKS A LITTLE AND THEN SINGS "IT'S A HARD RAIN GONNA FALL" THE REST OF THIS SIDE IS JOAN SINGING I THINK WITH DYLAN SOME OTHER TUNES LIKE "ALL MY TRIALS"& WE SHALL OVERCOME
SIDE 2 IS JOAN BEING INTERVIEWED AND SOME MORE LIVE STUFF.THIS WAS FOUND IN A RECORDING ENGINEERS COLECTION WHO WORKED FOR RIVERSIDE RECORDS.IN THE FIFTIES AND SIXTIES.THIS WILL HAVE TO BE SENT W/INSURANCE AND REGISTRATION.
RECORD:EX LITE PLAY SOME STORAGE AND PRESS MARKS BUT SOUNDS FINE ONE POP ON VERY START OF LP.