Above Page from Frank Lloyd Wright and Mason City: Architectural Heart of the Prairie (2016) with digital diagrams of the City National Bank and Park Inn in Mason City, Iowa, an important tandem building design by Frank Lloyd Wright (1910).
Its exterior fully restored, and the interior restored or appropriately reconstructed, it opened again as a hotel, restaurant and events facility in September 2011. Below is a postcard view of the original structure, c1910.