The health and pleasure-seeker's guide, or, Where to go and what to see : containing a description of the country from Philadelphia to Clifton Springs via the "North Pennsylvania", "Lehigh Valley", "Erie", "Northern central", and "N. Y. central" railroads, and including full and graphic sketches of Bethlehem, Mauch Chunk, the "Switchback," and Mount Esser, Onoko Glen, Wyoming Valley, Watkins and Havana Glens, Seneca Lake, Clifton Spring, &c. / by O.S. Senter.