Thanks for the Leadbelly lyrics. A version at ingeb has the verse:

Write me a letter
And send it to me,
Care of the jail-house
At Raleigh, N. C.

Who sang the Raleigh versions? This one is called the "Old Plantation" version:

Lyr. Add: DOWN IN THE VALLEY

Down in the valley, in the valley so low,
Hang your head over and hear the wind blow.
Little Willie's my darlin', Little Willie's my dear,
If you think I don't love her, got a feeling I fear.

She wrote me one letter, she sent it by mail;
She sent it in care of the Birmingham jail.
Gonna build me a steeple on the mountain so high,
So I can see Willie as she passes by.

She said that she loved me, to give my heart ease,
As soon as my back turned, she loved who she pleased.
I rapped on her window, I knocked on her door,
She gave me short answer, "Don't knock there no more."

Sitting in prison with my back to the wall;
The old corn whiskey was the cause of it all.
Judge said, "Stand up George, and dry up your tears,
You're sentenced to Raleigh for twenty-two years."

Down in the valley, in the valley so low,
Hang your head over and hear the wind blow.
If I had just listened to what my mother said,
I'd be there today, boys, in her feather bed.

Down in the Valley