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2003. Geological Survey (U.S.) Minerals Information Team. This point shapefile includes nonferrous metal processing plants in the United States. The data represent commodities covered by the Minerals Infor... National Atlas of the United States.
2004. Instituto Nacional de Estadística, Geografía e Informática (Mexico), Canada Centre for Mapping, and Geological Survey (U.S.). This polygon shapefile contains bathymetric data with depth in metres for ocean areas covered by the extent of the North American Atlas project. Is... Canada Centre for Mapping, Instituto Nacional de Estadística, Geografía e Informática (Mexico), and Geological Survey (U.S.).
2003. United States. Environmental Protection Agency. This polygon shapefile shows Omernik's Level III ecoregions, derived from a 1:7,500,000 map created by J.M. Omernik in 1987 and from refinements of... National Atlas of the United States.
2005. King, Philip B., Arndt, Raymond E., Schruben, Paul G., Bawiec, Walter J., and Beikman, Helen M. This line shapefile shows the outlines of major calderas and impact structures in the United States. A caldera is a large, generally circular depre... Geological Survey (U.S.) and National Atlas of the United States.
1998. University of Chicago Library. This file gives 1998 boundaries of the districts used by the Chicago Police Department. It is derived largely from the maps at the Police Departmen...
2014. National Atlas of the United States. This map layer shows major ports in the United States, Puerto Rico, and the U.S. Virgin Islands. A port is a city, town, or urban area with a harbo... National Atlas of the United States.
1930. University of Chicago Library. This map is part of a collection of 10 maps showing the location of Presbyterian Churches in relation to ethnic groups in the city of Chicago. The ...
1868. University of Chicago Library. Manuscript maps showing the distribution of ethnic groups and Presbyterian churches in Chicago, 1868-1940. This map is part of a collection of 10 m...
1868. University of Chicago Library. Manuscript maps showing the distribution of ethnic groups and Presbyterian churches in Chicago, 1868-1940. The manuscript title is "The effects of ...
1884. University of Chicago Library. This map is part of a collection of 10 maps showing the location of Presbyterian Churches in relation to ethnic groups in the city of Chicago. The ...