The Grateful Dead played this on at least a couple of occasions in 1969 and 1970. It also features on a tape known as "The Garage Jam" from 1970, supposedly with Garcia, Weir and Pete Sears, and as a studio rehearsal on 21 November 1970 by Garcia, Weir and Duane Allman.
These are the lyrics from those versions(thanks to Matt Schofield).
Lyrics By
Gene Crysler
Music By
Gene Crysler
Lyrics
A little boy knocked on the warden's door at Sing Sing, then in tears
Said "Sir, I understand that 83968 lives here
Well, he's my daddy, sir, and I just got to be near him
And if you can't let him out then you just got to let me in"
Let me in, let me in, 83968's my dad
I watched them bury mama
Now he's all in the world I have
I can break your little rocks with a hammer in my hand
I just got to be near daddy, Mr Warden please let me in
Well I checked through California, Alcatraz out on the rock
From Folsom on to Leavenworth, no one had my pop
When I found this newspaper clipping in my mama's souvenirs
And now I'm here in Sing Sing, 83968 lives here