Built in 1892 of brick and heavy timbers, the building suffered damage both in the 1909 flood and improper modifications in the 1970s. This building was removed in 2009. Building #9: This barn like building was built around 1900 and was removed around 1997. Wool Barn: The wool barn once stood where Building #1 is today and was removed in 1925. Chimney: The great square Hilliard Mills chimney once stood at an impressive 107 feet tall. The upper 60 feet were removed in 1995 and the ruins were cleared in 2008. Hilliard's Pond and Dam: A large concrete dam was created south of West Middle Turnpike. A large riveted pipe over 1000' in length lead from the dam to Building #6 to power the turbine. The dam was intentionally breached in 1978, but the ruins are still visible to the rear of the Bigelow Brook Estates Condominiums. Water Tower: Constructed in 1925 by Chicago Steel, the 50,000 gallon tank used to feed the sprinkler system at the site. This tower was scrapped and removed in 1995  Horizontal Turbine, Penstock and Mill Raceway: The penstock started from Hilliard's Pond and led all the way under Building #6 to a horizontal turbine. The turbine is still in place at the site and was uncovered in September 2016, with plans for a historical display/point of interest to be constructed at that location. The raceway has been largely filled in between the turbine and Building #1.  ca. 1780-1824: Aaron Buckland founds and operates the first woolen mill in the country.  1789: The wool used to make the suit for George Washington's Inauguration purportedly comes from Buckland's mill.  1824: Aaron Buckland sells to the mill to Andrew Williams and Simon Tracy.  1828: Tracy and Williams convey the property to Sidney Pitkin.  1831: Apprentice Elisha E. Hilliard is made one quarter owner of the mill.  1833: Building #6 is constructed  1842: E. E. Hilliard buys Mr. Pitkin's interest in the mill and becomes sole owner.  1849: Mr. Hilliard sells one quarter to Ralph Spencer, forms Hilliard and Spencer Company.  1875: Building #4 is constructed  1871-1940: Mr. Spencer sells his interests back, Mr. Hilliard and his successors found and operate the E.E. Hilliard Woolen Company on the site.  1882: Building #3 is constructed  1895: Building #2 is constructed.  1925: Building #1 is constructed.  1940-1949: Buildings purchased by Mr. Aaron Krock.