NEW LONDON — The Sibley State Park Improvement Association annual meeting will be conducted at 7 p.m. Tuesday, Sept. 22, at the park’s Interpretive Center, according to an announcement from Randy Alsleben, secretary of the association. A potluck will begin at 5:30 p.m. Tuesday, with drinks and paper products provided. The association is a partner of the nonprofit Parks and Trails Council of Minnesota which promotes sustainable land stewardship a…