Charts. Potomac River, Mattawoman Creek to Georgetown, surveys to 1905, surveys by U. S. Engineers to 1922 and other sources; with inset, Washington Harbor; chart 560. Scale 1:40,000.
Publication Title:
Potomac River, Mattawoman Creek to Georgetown, surveys to 1905, surveys by U. S. Engineers to 1922 and other sources; with inset, Washington Harbor; chart 560. Scale 1:40,000.
Display Title:
Charts. Potomac River, Mattawoman Creek to Georgetown, surveys to 1905, surveys by U. S. Engineers to 1922 and other sources; with inset, Washington Harbor; chart 560. Scale 1:40,000.