The Secret of Casa Grande Mexican Mystery Stories #1

On Secret Service Detective-Mystery Stories Based on Real Cases Solved by Government Agents

The Repair Of Casa Grande Ruin, Arizona, in 1891 Fifteenth Annual Report of the Bureau of Ethnology to the Secretary of the Smithsonian Institution, 1893-94, Government Printing Office, Washington, 1897, pages 315-348

Casa Grande Ruin Thirteenth Annual Report of the Bureau of Ethnology to the Secretary of the Smithsonian Institution, 1891-92, Government Printing Office, Washington, 1896, pages 289-318