| Notes: | At head of title: War Department... Corps of Engineers, U.S. Army.
Spot elevations in feet.
Ten thousand yard polyconic grid, Band Vn, Zone J.
Based on map from Department of Interior, Ins. Gov't., Island of Puerto Rico. Corrections and detail from P.R. Aerial Survey quads. USGS field sheets & military reconnaissance reports.
Municipal boundaries are shown, and cities are symbolized by importance.
Four classes of roads are shown, and mileage given between cities.
Inset maps: Vieques Island.--Culebra Island.--[Outlying islands]
Index map on separate sheet, 24 x 36 cm.
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