105 maps
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USGS historical 15-minute topo (1894)
USGS historical 15-minute topo (1932)
USGS historical 15-minute topo (1944)
USGS historical 15-minute topo (1939)
USGS historical 15-minute topo (1943)
USGS historical 15-minute topo (1934)
USGS historical 15-minute topo (1941)
USGS historical 15-minute topo (1947)
USGS historical 15-minute topo (1918)
USGS historical 15-minute topo (1922)
USGS historical 15-minute topo (1951)
USGS historical 15-minute topo (1949)
USGS historical 15-minute topo (1928)
USGS historical 15-minute topo (1942)
USGS historical 15-minute topo (1950)
USGS historical 15-minute topo (1929)
USGS historical 15-minute topo (1936)