There is a version of "Knockin' on Your Door" on the "Old & in the Way" album which is listed as a "traditional.” Hope this is helpful to someone.

KNOCKIN' ON YOUR DOOR

I'm a-knockin' on your door again, my darlin'.
I'm a-knockin' on your door. Please answer me.
Well, I've tried to make you realize, my darlin',
That no one else was ever meant for me.

Well, I remember, dear, you said that you'd always love me,
And you promised me your happiness so true,
But now you've gone away, dear, with another,
And I wonder if you feel the way I do.

I'm a-knockin' on your door again, my darlin'.
I'm a-knockin' on your door. Please answer me.
Well, I've tried to make you realize, my darlin',
That no one else was ever meant for me.

(Fiddle solo)

Well, I'm a-knockin' on your door again, my darlin'.
I'm a-knockin' on your door. Please answer me.
I never read the letters that you wrote, my little darlin'.
I'm sailin' far across the deep blue sea.

I'm a-knockin' on your door again, my darlin',
To return the letters that you wrote to me.
I'm a-knockin' on your door again, my darlin'.
This time, honey, I'm sure things gonna be.

(Banjo solo)

So goodbye, my dear. I know you'll soon forget me,
And I hope that you find happiness so true,
But wherever you go, sweetheart, remember
That my love will always be the same for you.

I'm a-knockin' on your door again, my darlin'.
I'm a-knockin' on your door. Please answer me.
Well, I'm tryin' to make you realize, my darlin',
That no one else was ever meant for me.

(Mandolin solo)

I'm a-knockin' on your door again, my darlin'.
I'm a-knockin' on your door. Please answer me.
Well, I've tried to make you realize, my darlin',
That no one else was ever meant for me.