A1457 Cooperatives: Principles and practices in the 21st century Kimberly A. Zeuli and Robert Cropp ABOUT THE COVER IMAGE: The “twin pines†is a familiar symbol for cooperatives in the United States. The Cooperative League of the USA, which eventually became the National Cooperative Business Association (NCBA), adopted it as their logo in 1922. The pine tree is an ancient symbol of endurance and immortality. The two pines represent mutual cooperation—people helping people.
