Here are the two Lomax versions. As usual, Lomax and son are not very helpful about providing background information.
-Joe Offer-

COTTON FIELD SONG (a composite)

Raccoon an' de possum,
Rackin' 'cross de prairie,
Raccoon ask de possum—
Does she want to marry?

Possum in a 'simmon tree,
Raccoon on de groun',
Raccoon ask de possum
To shake dem 'simmons down.

Well, I met a possum on de road
An' ask him whar he's gwine.
He 'lowed it was his business,
But it wasn't none o' mine.

Den I see Miss Rabbit,
A-settin' in de brush,
All dressed up in her Sunday clothes,
A-lookin' sweet and fresh.

Miss Rabbit am a gay young gal,
She come to meet her beau;
Somepin's gwineter happen soon,
Ef de preacher am too slow.

I met a rabbit in de road,
I ast him whar he's gwine.
"I ain't got time to tell you now,
De ol' gray houn's behin'."

"Say, Mister Rabbit,
Your ears mighty thin."
"Yas, bless-a-God,
They been a-splittin' de win'."

"Say, Mister Rabbit,
Your fur mighty gray."
"Yes, bless-a-God,
Seen a ha'nt 'fore day."

Hog an' a sheep,
A-goin' to de paster,
Hog tol' de sheep,
"Caincha trot a little faster?"

Thousand verses to my song,
Hope I've sung 'em all.
'Fore I'd sing 'em all again,
I'd see you all in hell.

Source: American Ballads and Folk Songs, John & Alan Lomax, 1934

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MISTER RABBIT

1. "Mister Rabbit, Mister Rabbit, your tail's mighty white."
"Yes, bless God, been gittin' outa sight."

REFRAIN:
Ev'y little soul gwine-a shine, shine,
Ev'y little soul gwine-a shine along.

2. "Mister Rabbit, Mister Rabbit, your coat's mighty grey."
"Yes, bless God, been out 'fo' day."

3. "Mister Rabbit, Mister Rabbit, your ears mighty long."
"Yes, bless God, been put on wrong."

4. "Mister Rabbit, Mister Rabbit, your ears mighty thin."
"Yes, bless God, been splittin' the wind."

Source: Best Loved American Folk Songs (Folk Song USA), John & Alan Lomax, 1947

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Click to play alternate tune

This tune of Mister Rabbit is slightly different: It is from "Burl Ives - Song in America - Our Musical Heritage," arrangements by Albert Hague, Wayfarer Music Co., New York, 1962, pp124-125.

Sincerely,
Gargoyle