The concept of building the world's first farmer-owned network originated at the Cooperative Grange League Federation Exchange (commonly known as "GLF"), an agricultural co-op founded in 1920 in Ithaca, which later merged with another co-op to form the Agway organization that remains today. GLF, also noted for its role in founding the P&C Foods supermarket chain, began to use radio several years before the start of World War II and later assembled an informal network of about ten AM stations, connected by leased telephone lines, over which a weekly five-minute program was aired. The value of this early "network" was proven during the war when GLF members found it difficult to attend regular meetings.