According to Soike, this barn is the first known example of the work of the Davenport firm of Gordon-Van Tine. 3 This firm provided the plans and the precut material needed to construct the barn. The Tarrence barn has a diameter of 50 feet and is covered by a conical roof with its central cupola still in place. As with other barns by this firm, the walls are covered by vertical siding.
Lowell J. Soike, Without Right Angles: The Round Barns of Iowa, 78.