Relief shown by contours, isolines and spot heights. Contour interval on land 10 feet; contours off shore at depths of 5, 10, and 20 feet. Surveyed in 1917, in cooperation with the War Department. Text and ill. on verso. R.B. Marshall, chief geographer; W.H. Herron, geographer in charge; topography by W.H. Griffin [and others].
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