sentences:  It is best known for its rich history and is perhaps most famous for its role in Wyoming's Johnson County War.Early into Wyoming's Territorial formation in 1868 cattle men began to lobby the powerful territorial government, and befriended John A. Campbell, the first territorial governor of Wyoming who served from 1869 to 1875.During May 1871, Campbell sponsored the first organization of cattlemen in the territory and became the president of this Wyoming Stock Grazier's Association.