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  Partner: UNT Libraries Government Documents Department
 Resource Type: Map
Geothermal Gradient Map of the Conterminous United States

Geothermal Gradient Map of the Conterminous United States

Date: August 1980
Creator: Kron, Andrea
Description: Geothermal gradient map of the United States published by the Hot Dry Rock (HDR) Geothermal Program of the Department of Energy, showing geothermal gradient contours and color-coded based on temperature. The map also contains information about how the information for the map was compiled.
Contributing Partner: UNT Libraries Government Documents Department
An Ecological Characterization Study of the Chenier Plain Coastal Ecosystem of Louisiana and Texas, Volume 3: Atlas

An Ecological Characterization Study of the Chenier Plain Coastal Ecosystem of Louisiana and Texas, Volume 3: Atlas

Date: August 1979
Creator: United States. Environmental Protection Agency. Office of Research and Development.
Description: Atlas of maps illustrating habitat groups along a portion of the Gulf Coast stretching across Texas and Louisiana. It includes two index maps (one for each state)
Contributing Partner: UNT Libraries Government Documents Department
Ecoregions of North America: After the Classification of J.M. Crowley

Ecoregions of North America: After the Classification of J.M. Crowley

Date: June 1981
Creator: Bailey, Robert G.
Description: Color-coded map showing the ecoregions of North America, including the polar domain, humid temperate domain, dry domain, and humid tropical domain.
Contributing Partner: UNT Libraries Government Documents Department
Standard Time Zones of the United States and adjacent Parts of Canada and Mexico as of October 1, 1935

Standard Time Zones of the United States and adjacent Parts of Canada and Mexico as of October 1, 1935

Date: 1935
Creator: Geological Survey (U.S.)
Description: One map showing standard time zones of the United States as of October 1, 1935, with an updated map showing new boundaries in Georgia, Ohio, and Michigan. Notes on the first map describe the changes effective September 27, 1936 and November 23, 1941.
Contributing Partner: UNT Libraries Government Documents Department
Map of Standard Time Zones of the United States and Adjacent Parts of Canada and Mexico as of January 1, 1948

Map of Standard Time Zones of the United States and Adjacent Parts of Canada and Mexico as of January 1, 1948

Date: January 1, 1948
Creator: Geological Survey (U.S.)
Description: Map of the United States and surrounding areas with time zones marked and labeled in red. Bodies of water are marked, with depth marked by hatchures, as well as state lines and major cities..
Contributing Partner: UNT Libraries Government Documents Department
Investigation of Lower Coal Beds in Georges Creek and North Part of Upper Potomac Basins, Allegany and Garrett Counties, Maryland: Reserves, Petrographic and Chemical Characteristics of Coals, and Stratigraphy of Area (Maps)

Investigation of Lower Coal Beds in Georges Creek and North Part of Upper Potomac Basins, Allegany and Garrett Counties, Maryland: Reserves, Petrographic and Chemical Characteristics of Coals, and Stratigraphy of Area (Maps)

Date: 1949
Creator: Toenges, Albert L.
Description: Series of eleven maps to illustrate coal mines in Maryland, to accompany a report about thinning in the coal beds.
Contributing Partner: UNT Libraries Government Documents Department
Ray Roberts Lake Pre-Construction Landuse, January 1980

Ray Roberts Lake Pre-Construction Landuse, January 1980

Date: unknown
Creator: CRSLA
Description: Map showing the area around Ray Roberts Lake in Northern Texas. It contains a color coded legend indicating a variety of geographical features. Scale 1:150,000
Contributing Partner: UNT Libraries Government Documents Department
Ray Roberts Lake Year Ten Post Impoundment Land Use, November, 1997

Ray Roberts Lake Year Ten Post Impoundment Land Use, November, 1997

Date: unknown
Creator: CRSLA
Description: Map showing the area around Ray Roberts Lake in Northern Texas. It contains a color coded legend indicating a variety of geographical features. Scale [1:150,000]
Contributing Partner: UNT Libraries Government Documents Department
Ray Roberts Lake Pre-Impoundment Landuse, July 1987

Ray Roberts Lake Pre-Impoundment Landuse, July 1987

Date: unknown
Creator: CRSLA
Description: Map showing the area around Ray Roberts Lake in Northern Texas. It contains a color coded legend indicating a variety of geographical features. Scale 1:150,000
Contributing Partner: UNT Libraries Government Documents Department
Map Illustrating the plan of the defenses of the Western & North Western Frontier, as proposed by Charles Gratiot, in his report of October 31, 1837

Map Illustrating the plan of the defenses of the Western & North Western Frontier, as proposed by Charles Gratiot, in his report of October 31, 1837

Date: 1837
Creator: Hood, W.
Description: Map showing the area west of the Mississippi River. It includes United States territory name, Indian territory, settlements, and rivers.
Contributing Partner: UNT Libraries Government Documents Department
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