HISTORY, MANNERS & CUSTOMS OF THE INDIAN NATIONS WHO ONCE INHABITED PENNSYLVANIA & THE NEIGHBORING STATES by Rev. John Heckewelder. Softbound, 450 pages, 5" x 8". Heckewelder (1743-1823) was a missionary to the Indians on the Susquehanna River. An astute observer, he became an expert on their history, manners, customs and language. In this classic work, he  presents a full account of all aspects of their life, including an extensive section on their language, with examples of words and phrases.