Frank Augustus Miller owned an Inn that is the a member of what official program of the National Trust for Historic Preservation?
Frank Augustus Miller: Frank Augustus Miller (June 30, 1858 – June 17, 1935) was the owner and chief developer of the Mission Inn in Riverside, California, United States, where Frank Augustus Miller Middle School was named after him. The Mission Inn Hotel &amp; Spa:  Mission Inn Hotel & Spa is a member of Historic Hotels of America, the official program of the National Trust for Historic Preservation.
Historic Hotels of America