university and its round barns. Structures While the property information report from the state of Illinois asserts that there are eight contributing structures, the actual original nomination form lists eight total structures with only five contributing: a storage building, the three round barns, and the Manager's House. Three other structures detailed on the nomination are listed as non-contributing: the "Cow Shed," the Dairy Laboratory, and the 1950s era garage for the Manager's House. Over time, the historic district has lost three structures. One, a silo southwest of Barn #3, was extant as late as 1950. A second was a small, gable-roofed structure which resembled a shed or similar outbuilding. That structure was east of Barn #3. The final lost building was between Barns #2 and #3, along an east-west orientation. Historic photographs show the building was a small, residential structure with human-scaled doorways, which may have been a laboratory of some sort. Manager's House This 1908 residential building combines elements from Tudor Revival and American Craftsman architectural styles. The square plan, two-story structure has a full basement and a brick and stucco foundation. Round Barns The round barns at the University of Illinois played a special role in the promotion and popularity of the American round barn. The University of Illinois was home to one of the Agricultural Experiment Stations at U.S. universities which were at the heart of the promotion of the round barn. At least one round barn in Illinois was built specifically after its owner viewed the barns at the university. Though originally an experiment the three barns helped to lead the way for round barn construction throughout the Midwest, particularly in Illinois. Storage building The pre-1934 Storage building is a rectangular, one story structure on a concrete foundation. It has a gabled roof and wood siding, when the district was nominated in 1994 the storage building's gabled roof had asbestos shingles. The interior of the building is open, its walls and ceilings are plywood and it has a concrete floor. Non-contributing Of the eight structures on site as of 2007, three are non-contributing to the historical integrity of the small historic district. Two are one-story rectangular buildings: the 1951 Garage and the post-1950 Cow Shed. The third is the 1956 Dairy Laboratory, a one-story "L" plan building. Significance The University of Illinois Experimental Dairy Farm was established as a National Register of Historic Places historic district