368 maps
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USGS historical 15-minute topo (1942)
USGS historical 15-minute topo (1945)
USGS historical 15-minute topo (1940)
USGS historical 15-minute topo (1966)
USGS historical 15-minute topo (1954)
USGS historical 15-minute topo (1956)
USGS historical 15-minute topo (1955)
USGS historical 15-minute topo (1964)
USGS historical 15-minute topo (1919)
USGS historical 15-minute topo (1941)
USGS historical 15-minute topo (1953)
USGS historical 15-minute topo (1972)
USGS historical 15-minute topo (1951)
USGS historical 15-minute topo (1957)