The Cada C. Boak House, located on Ellis St. in Tonopah, Nevada, is a stone house that was built in 1906 by one A.P. Kanters. It was listed on the National Register of Historic Places in 1982. The house is significant for association with important Nevadan Cada C. Boak, who bought the house in 1910 and lived there for the rest of his life. He was involved in mining, and, among other public contributions he served as "a national director" of the Highway 50 Association, and founded and served as president of the Western Good Roads Association. He also rediscovered the Lehman Caves and recommended to President Harding that they be named a National Monument, which Harding did.