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The Tri-County Antique Club property is located in Illinois, on Illinois Route 3 in southern Jersey County. The club has established an AGRICULTURAL HERITAGE MUSEUM, and also holds their Annual "OLDEN DAYS" Festival and Annual Swap Meet and Flea Market at this location. The club also has many other activities throughout the year and is part of the Jersey County Tourism effort. The club grounds are available for lease to other organizations and individuals for various events.

Located in Illinois at , just 8 miles south of Jerseyville on Illinois Route 109 to the junction of Illinois Route 3 and Illinois Route 109, then west 2 miles on Route 3 (Old Route 100). Location is on north side of highway at the home of "Olden Days."