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

"The Repair of Casa Grande Ruin, Arizona, in 1891" by Cosmos Mindeleff is a historical record of the work done to preserve an important old site in Arizona. The report tells about the money the government gave to fix up Casa Grande Ruin and why it was so important to do it quickly. The story describes how the building was falling apart because of the weather and people damaging it. Mindeleff goes into detail about how they fixed the walls, dug out the trash, and supported the structure. He believed it was important to keep the ruin safe so people could learn from it in the future. The report shows how they tried to fix the building while keeping its old look through descriptions, illustrations and findings. It also points out that more work will always be needed to keep the ruin from falling apart over time.