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1901. Harvard Map Collection, Harvard College Library and Geological Survey (U.S.). This layer is a georeferenced raster image of the historic, topographic paper map entitled: Colorado, Denver quadrangle, U.S. Geological Survey. Ed... Harvard Map Collection, Harvard College Library.
1996. Federal Emergency Management Agency. Q3 flood data for New York, 1996. The Q3 Flood Data are derived from the Flood Insurance Rate Maps (FIRMs) published by the Federal Emergency Manag... Federal Emergency Management Agency.
1996. Federal Emergency Management Agency. Q3 flood data for Ohio, 1996. The Q3 Flood Data are derived from the Flood Insurance Rate Maps (FIRMs) published by the Federal Emergency Managemen... Federal Emergency Management Agency.
1996. Federal Emergency Management Agency. Q3 flood data for Pennsylvania, 1996. The Q3 Flood Data are derived from the Flood Insurance Rate Maps (FIRMs) published by the Federal Emergency M... Federal Emergency Management Agency.