It’s in DADGBD tuning, using the following chord fingerings:
D 000230
D/c 030230
D add flat 6 000330
G 020030
   
D          /c   G                   D
Here I sit with a babe in arms
                            D flat6 D
And another one here within
                            D flat6
And where’s my man?
                        /c                G             D
Ah, don’t you know, he’s drinking, carousing
       G                   D
And living a life of sin.

Recorded with capo on first fret, making it all in Eb.
I only know all this because it’s in her excellent Buffy Sainte-Marie Songbook from 1971.