Here are the lyrics (not checked against the Dallas String Band version, the sample sound file I could find is all instrumental) to save time for chord addition:

I Used to Call Her Baby
Words and music by Howard Johnson, Murray Roth, & Cliff Hess

My father was a widower and we lived all alone,
With no one in our home that we could call our own.
But sad to state, I grew to hate that weary, dreary life.
Made up my mind I'd go and find a loving, little wife.
I met a little dear and courted her a year.
And oh what pretty things I used to whisper in her ear.
   
    I used to call her "Baby," she seemed like a baby to me.
    When she said that we should wed, you bet I was glad.
    Then I took her home and introduced her to Dad.
    That's when I lost my baby, for Dad had coin you see.
    She never even stopped to say, "Ta-Ta,"
    Next day she turned around and married Pa.
    And just to think, I used to call her "baby"
    And now she's a mother to me.

To think that after all these years so free from care and strife,
I'd change my plan of life, and try to grab a wife,
I thought that she'd be company, but now I plainly see,
That she is better company for Daddy than for me.
The way she made me feel it seems it can't be real,
But just the same I got an awful deal

    I used to call her Baby, She seemed like a baby to me,
    Any time she comes along and sits on my knee,
    She don't seem to have the same attraction for me,
    To think she was my Baby, It's got me up a tree,
    Now when my evening pray'rs have all been said,
    She always tucks me in my little bed,
    And just to think I used to call her Baby,
    And now she's a mother to me.