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~ Porcupine Ridge UT topo map, 1:24000 scale, 7.5 X 7.5 Minute, Historical, 1968, updated 1970
~ Porcupine Ridge UT topo map, 1:24000 scale, 7.5 X 7.5 Minute, Current, 2014
~ Porcupine Ridge UT topo map, 1:24000 scale, 7.5 X 7.5 Minute, Historical, 2010
~ Porcupine Ridge UT topo map, 1:24000 scale, 7.5 X 7.5 Minute, Historical, 1991, updated 1991
~ Porcupine Ridge UT topo map, 1:24000 scale, 7.5 X 7.5 Minute, Historical, 1968, updated 1979