The Arizona Department of Corrections has historical prison records for:

• The Yuma Territorial Prison, Cochise County, 1878 – 1909
• Fort Grant
• Arizona Prison at Florence, 1908,  replaced Yuma Territorial Prison
• Superintendents of Yuma Territorial Prison, 1875-1912
• Life Imprisonment and Death Sentences, 1875-1966

They also have current records for:

• Inmate Datasearch
• Public Records Request