Oro Fino Terrace began ca. 1887 as six seperate three-story houses under one roof. It was designed by St. Paul, Minnesota architect Ralph Edgerton.

In later years, the larger residences in the building were cut up into rental flats. It was heavily damaged by fire in early 1985 and was subsequently demolished.

In 1892, entrepreneur Harry W. Child, with partners Silas S. Huntley, L.H. Hershfield, Aaron Hershfield, and others, established the Yellowstone National Park Transportation Company to provide stagecoach travel in the Park. In 1901 Child, Huntley, and E.W. Back purchased the stock of the Yellowstone Park Association to consolidate their control of the concessions. Later that year, Huntley died, leaving Child to control both companies. Child also operated Child & Anceny with C. L. Anceny; that business dealt in real estate and cattle ranching. In 1909 Child, his wife Adelaide D. Child, and their son Huntley Child reorganized the Yellowstone National Park Transportation Company into its constituent parts, the Yellowstone Park Transportation Company and the Yellowstone Park Hotel Company.

In 1930, Harry's wife Adelaide, then living in La Jolla, California, sold Oro Fino Terrace to Helenan T. H. MacDonald.

Harry Child died in 1931, and his son-in-law William M. Nichols took over the operation of the Yellowstone Park concessions. Yellowstone Park Company continued to operate until the United States Government purchased all associated property of the company and their lease to operate was terminated in 1980.

In her later years in Helena, Adelaide Child donated $18,000 to remodel the disused Unitarian Church at Park and Lawrence into the Helena Public Library. This building is now the Grandstreet Theatre. She also donated to St. Peter's Hospital, and a building on the old St. Peter's Logan Street campus was named in her honor.