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1959. 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: Madison and vicinity, Wisconsin, 1959, mapped, edited, ... Harvard Map Collection, Harvard College Library.
1996. Federal Emergency Management Agency. Q3 flood data for North Dakota, 1996. The Q3 Flood Data are derived from the Flood Insurance Rate Maps (FIRMs) published by the Federal Emergency M... Federal Emergency Management Agency.