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~ Gatzke NW MN topo map, 1:24000 scale, 7.5 X 7.5 Minute, Historical, 2013
~ Grygla MN topo map, 1:100000 scale, 30 X 60 Minute, Historical, 1977, updated 1978
~ Gatzke NW MN topo map, 1:24000 scale, 7.5 X 7.5 Minute, 2016
~ Gatzke NW MN topo map, 1:24000 scale, 7.5 X 7.5 Minute, Historical, 2010
~ Gatzke NW MN topo map, 1:24000 scale, 7.5 X 7.5 Minute, Historical, 1962, updated 1964
~ Gatzke NW MN topo map, 1:24000 scale, 7.5 X 7.5 Minute, Historical, 1962, updated 1984