Chart of Harbor at Duluth, Minn. and Superior, Wisconsin.
Title:
Chart of Harbor at Duluth, Minn. and Superior, Wisconsin.
Publication Information:
[Place of publication not identified] : War Dept. Corps of Engineers, 1919.
Physical Description:
1 map.
General Note:
Includes: depth soundings, geo co ord., detail of harbor area.
Language:
English
Geographic Term: