Washington, D.C. : U.S. Department of Commerce, National Oceanic and Atmospheric Administration, National Ocean Service, Coast Survey, 2014.
Scale 1:30,000 ; polyconic projection (W 88°40ʹ--W 88°22ʹ/N 47°14ʹ--N 46°58ʹ).
Depths shown by gradient tints, isolines and soundings. Relief shown by contours and spot heights. "Soundings in feet." Inset: Hancock and Houghton Michigan. Scale 1:10,000. Includes source diagram and table of low water datum for Lake Superior. "NSN 7642014010709." "NGA Reference no. 14XHA14972." "14972." Shipping list no.: 2014-0027-S.