The Exeter Historical Society is partnering with Phillips Exeter Academy, SAU 16, Exeter Public Library, American Independence Museum, Exeter Area Chamber of Commerce, Inn by the Bandstand, Infinite Imaging of Exeter, NH Historical Society, Town of Exeter, Exeter Arts Association, Manchester Historic Association, NH Political Library and Woodman Institute to celebrate the 150th anniversary of Lincoln's visit to the state.    Festivities will include guided walking tours of Lincoln-related sites in town, a Geocaching adventure created by local 8th grade students, a Civil War-era band concert and kids' activities sponsored by the Exeter High School History Club.  The event will culminate in Lincoln's encore presentation at Exeter's Town Hall, where he spoke on March 3, 1860.  This program is made possible by a grant of the New Hampshire Humanities Council.