New Jersey Geological Survey Geological Survey of New Jersey Companion text: The vegetation of the New Jersey Pine-Barrens; an ecological investigation / John W. Harshberger. Philadelphia : Christopher Sower Co. 1916. 329p. Plate 1. At head of map: Plate 1, Vegetation of the New Jersey pine- barrens. Relief shown by 50 ft. contour interval and spot heights."Based on county and minicipality maps, political boundaries as of January 1, 1915, compiled under the direction of Cornelius Clarkson Vermeule, Topographer." Base map engraved in 1911", printed in Baltimore by A. Hoen & Co. Text not held by PUL; information received from Rutgers Univ. Library Special Collections Dept.