The Sonoran-styled adobe house built by rancher Andronico Loroña in 1886 was typical of houses built in early Florence by ranchers. Its original flat roof was later replaced with a pitched roof covered with tin. Loroña lived there with his family until his wife's death in 1935. After he and his three daughters left the area, his aunt Mercy Chisholm lived there with her husband until 1972. Mr. Chisholm was an electrician and is said to have wired the first electric chair at Sing Sing prison, and legend held that no one knew his given name and that even his wife called him Mister. The house is listed on the National Register of Historic Places.