By Larry ChaseIn place of Andover’s summer events like the Fourth of July Celebration and the Old Time Fair that had to be canceled this year because of the pandemic, the Andover Historical Society will present a free concert by Lindsey Schust and the Ragged Mountain Band, plus special guests. The Ragged Mountain Band is a local group that performs original material and a mixture of traditional Americana, folk, country western, bluegrass, and folk rock. The concert will begin at 6 PM on Sunday, August 2, live via Zoom. Up to 100 households can reserve a seat in advance by sending an e-mail request to Treasurer@nullAndoverHistory.org. Now in its 10th year, the Ragged Mountain Band includes, besides Lindsey Schust on keyboards, other members of the Schust family (Grace, Jim, and Jesse) plus occasional friends. Their signature song “Hippie Hill” can be heard on the group’s website at LindseySchustRaggedMtBand.com.