As to the marketing, he did it all.

He sat at the head of the servants' table in the kitchen, and was master of the ceremonies.

A single look from him was enough to silence any conversation or noise among the servants in the kitchen or in any other part of the premises.
There is in the Southern States a great amount of prejudice in regard to color, even among the negroes themselves.

The nearer the negro or mulatto approaches to the white, the more he seems to feel his superiority over those of a darker hue.

This is no doubt the result of the prejudice that exists on the part of the whites against both the mulattoes and the blacks.
Sam was originally from Kentucky, and through the instrumentality of one of his young masters, whom he had to take to school, he had learned to read so as to be well understood, and, owing to that fact, was considered a prodigy, not only among his own master's slaves, but also among those of the town who knew him.