United States--Great Lakes, Lake Superior--Michigan, St. Marys River to Au Sable Point / Coast Survey.
- "LORAN-C overprinted." Depths shown by isolines and soundings. Relief shown by hachures and spot heights. Shipping list no.: 2004-0029-S. "Soundings in feet." Insets: Grand Marais, Mich. Scale 1:15,000 -- Whitefish Point Harbor, Mich. Scale 1:5,000 -- Little Lake Harbor, Mich. Scale 1:5,000. Includes source diagram and table of low water datum for Lake Superior.
- U.S. Dept. of Commerce, NOAA, NOS, Coast Survey ;
- Held by
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