The Elm Research Institute, known for its Dutch-elm-resistant Liberty elms, offers a plaque commemorating the victims of Sept. 11. The Liberty Tree Memorials include the commemorative plaque and a 6 to 8 foot Liberty elm ready for planting. The cost is $600, but if a community can raise $300, ERI will find a matching donor to fund the balance. Go to www.memorialandgifttrees.com for more information.