From the MP3 of Sweet Dandy Jim of Caroline by Japher's "Original" SANDY RIVER MINSTRELS.

For my ole massa tole me so,
I was de best lookin *feller in de County O,
I look in de glass an I found it so,
Jus what massa told me O.

*edited

The Prettiest Little Girl originated from the chorus of Dandy Jim from Caroline (posted above). It was published in Baltimore by F. D. Benteen in 1844.

[This song was published in 1844 by at least six publishers,
and in New York and Boston as well as in Baltimore. By different
publishers it was attributed it to Chas. Reps, Dan Emmet, Geo.
F. Bristow and J. T. Norton. The lyrics differ somewhat from
publisher to publisher.]