The exhibit at Walden Pond Reservation has been hung, and will be up until the 28th of March, 2014. The Tsongas Gallery, which is just next to the Thoreau Society Bookstore, is open on Fridays, Saturdays and Sundays during the month of February, and seven days a week during March. It's located at 915 Walden Street, Concord, MA, 01742. You can find all the relevant details at this facebook listing, and you can 'like' the facebook page while you're there if you'd care to do so. Thank you.