United Prune Growers
The United Prune Growers of California was a growers' selling organization intended to control prune output and keep prices high during the Great Depression. The organization was launched in 1933, signing up 80% of production by May 1933. F. R. Wilcox of the Giannini foundation was the group's leader for its first year. Wilcox later was the chairman of the Prune Control Board.