What process did the Logan’s have to go through to sell their cotton?

In August it is time to harvest the cotton crop and take it to the mill to have ginned. It is a big event in the town. Mama and Mr. Morrison, as well as Stacey and Cassie, go to the Granger-Walker mill. They see Stuart there, who grins and is disrespectful toward Mama. Stacey is visibly angry, but she tells him to be calm.

They take care of their crop and Mr. Granger compliments Mama. He offers to buy their land if they can’t meet their financial obligations, but she politely thanks him and says that will not happen. Cassie sees Moe and Stacey talking, but is not sure what is going on.