Original: At the end of the 19th century, "the valley of Walnut Creek was one continuous mining camp, known under different names, Jerome, Diamond, Mystic, Clarksdale, Rathbun and Darby" (later known as Darbyville).
Simplified: At the end of the 19th century, "the valley of Walnut Creek was one long mining camp, known under different names, Jerome, Diamond, Mystic, Clarksdale, Rathbun and Darby" (later known as Darbyville).