Looking into F. C. Brown, North Carolina Folklore, there is a version similar to Mainer's, collected in 1921 from a Miss Hattie McNeill, Wilkes County, NC. I have only the volume with musical scores, so I can't post the verses she sang.

IN THE PINES, WHERE THE SUN NEVER SHINES

To the pines, to the pines, where the sun never shines.
Oh, I shivered when the cold wind blowed.
8
The longest train I ever saw
Was on the Georgia line.
The engine passed at five o'clock,
The cab never passed till nine.

pp. 199-200, F. C. Brown, "North Carolina Folklore," vol. 5, The Music of the Folk Songs, ed. J. P. Schinhan.