established the downtown core in a grid layout pattern that has been the hallmark of Phoenix's urban development ever since.

On February 12, 1871, the territorial legislature created Maricopa County by dividing Yavapai County; it was the sixth one formed in the Arizona Territory. The first election for county office was held in 1871 when Tom Barnum was elected the first sheriff. He ran unopposed when the other two candidates (John A. Chenowth and Jim Favorite) fought a duel; Chenowth killed Favorite and was forced to withdraw from the