The Leroy R. Willard House, also known as Willard Mansion, is located in Marshalltown, Iowa.

The house was built in 1910 for Leroy R Willard and has been listed on the National Register of Historic Places since 1976.

LeRoy Randall Willard (1 July 1864 - 2 October 1917) was owner of the Marshall Oil Company.

The home was designed by Charles Eckman using Edwardian Georgian architectural styles.

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