'Economy of the Round Dairy Barn' is a treatise intended to convince the readers of a better and more land-efficient building structure for dairy farms—-which happens to be round barns. Round barns date to the 18th and early 19th centuries. George Washington designed and built a sixteen-sided threshing barn at his Dogue Run Farm in Fairfax County, Virginia. The first truly round barn in North America was constructed in 1826 at Hancock Shaker Village. A few other round barns appeared on the American landscape before the Civil War.