Charts. Chesapeake Bay entrance, Va., surveys to 1919, surveys by U. S. Engineers to 1920. additional topography from Geological Survey; chart 1222. Scale 1:80,000.
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Chesapeake Bay entrance, Va., surveys to 1919, surveys by U. S. Engineers to 1920. additional topography from Geological Survey; chart 1222. Scale 1:80,000.
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Charts. Chesapeake Bay entrance, Va., surveys to 1919, surveys by U. S. Engineers to 1920. additional topography from Geological Survey; chart 1222. Scale 1:80,000.