Lyrics below copied from the sheet music at The Library of Congress American Memory Collection:

MA CURLY-HEADED BABBY: PLANTATION SONG
George H. Clutsam, (1866-1951)
New York : Chappell & Co., c1897.

1. Oh, ma babby, ma curly-headed babby,
We'll sit below de sky an' sing a song to de moon.
Oh, ma babby, ma little nigger babby,
Yo' daddy's in de cotton-field a-workin' for de coon.

CHORUS: So lulla, lulla, lulla, lulla, by-by!
Does yer want de moon ter play wid?
Or de stars ter run away wid?
Dey'll come if you don't cry;
So lulla, lulla, lulla, lulla, by-by!
In de mammy's arms be creepin',
An' soon yer'll be a-sleepin'.
Lulla, lulla, lulla, lulla, lullaby!

2. Oh, ma babby, ma curly-headed babby,
I'll dance yer fast to sleep an' lub yer so, as I sing.
Oh, ma babby, ma little nigger babby,
Jus' tuck yer head, little bird, below its mammy's wing. CHORUS.