1934. 2012-04-20T19:33:01Z. 2015-10-21T15:22:10Z. U.S. Lake Survey. U.S. Lake Survey Office. English. Public. Michigan, Hancock, Houghton, Keweenaw Waterway (Mich.), and Superior, Lake.
Search Results
1996. 2011-11-16T18:36:07Z. 2015-10-21T15:05:43Z. United States Coast Survey. The Survey ; NOAA Distribution Branch, N/CG33, National Ocean Service, distributor. English. Public. Michigan, Hancock, Houghton, Keweenaw Waterway (Mich.), and Superior, Lake.
