Your search for ""usgsnw49-100"" revealed the following:

~ Lake Upsilon ND topo map, 1:62500 scale, 15 X 15 Minute, Historical, 1942

~ Lake Upsilon ND topo map, 1:48000 scale, 15 X 15 Minute, Historical, 1936

~ Rock Lake ND topo map, 1:100000 scale, 30 X 60 Minute, Historical, 1985, updated 1986

~ Rock Lake ND topo map, 1:100000 scale, 30 X 60 Minute, Historical, 1985, updated 1994

~ Carpenter Lake ND topo map, 1:24000 scale, 7.5 X 7.5 Minute, Current, 2014

~ Carpenter Lake ND topo map, 1:24000 scale, 7.5 X 7.5 Minute, Historical, 1968, updated 1971

~ Carpenter Lake ND topo map, 1:24000 scale, 7.5 X 7.5 Minute, Historical, 2011

~ Devils Lake ND topo map, 1:250000 scale, 1 X 2 Degree, Historical, 1953, updated 1986

~ Devils Lake ND topo map, 1:250000 scale, 1 X 2 Degree, Historical, 1956, updated 1956

~ Devils Lake ND topo map, 1:250000 scale, 1 X 2 Degree, Historical, 1953, updated 1968

~ Devils Lake ND topo map, 1:250000 scale, 1 X 2 Degree, Historical, 1953, updated 1974