God's Little Acre by Erskine Caldwell

Like Tobacco Road, this novel chronicles the final decline of a poor white family in rural Georgia. Exhorted by their patriarch Ty Ty, the Waldens ruin their land by digging it up in search of gold. Complex sexual entanglements and betrayals lead to a murder within the family that completes its dissolution. Juxtaposed against the Waldens' obsessive search is the story of Ty Ty's son-in-law, a cotton mill worker in a nearby town who is killed during a strike.