A Week on the Concord Merrimack Rivers Author:Henry David Thoreau An excursion in history upon green 19th-century waterways by America's great naturalist-philosopher. Sentry Editions are books of lifetime interest, intended not for casual reading but for life on the shelf as well as in the hand. They are printed on paper of good quality in a binding that has the curability of cloth but the price and compactn... more »ess of paper. Biographical sketch by R.W. Emerson.« less