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241 results returned

  1. Title: Vienna, Austria, 1770 (Image 4 of 4) (Raster Image)

    Contributors:

    Summary: This layer is a georeferenced raster image of the historic paper map entitled: Grund Riss der Ka?. K?ningl. residenz stadt Wien unter glorw?rdigster Regierung be?der ma?ten. Josephs des IIten. R?m. Ka?sers un Mari? Theresi? R?m. Ka?serin und Apost. K?nigin auf allerh?chsten Befehl, unter der Direction dero hof Mathematici Joseph Nagel aufgenommen von den N.?. Reg.Ingenieur Franz Gruss und Joseph Ne?ssner ; J.E. Mansfeld Sculp. It was published in 1770. Scale [ca. 1:1,300]. Covers Vienna, Austria. This layer is image 4 of 4 total images, representing the northwest portion of the four sheet source map. Map in German. The image inside the map neatline is georeferenced to the surface of the earth and fit to the MGI 3-Degree Gauss Kruger coordinate system. All map collar and inset information is also available as part of the raster image, including any inset maps, profiles, statistical tables, directories, text, illustrations, index maps, legends, or other information associated with the principal map.This map shows features such as roads, drainage, built-up areas and selected buildings, fortification and more.This layer is part of a selection of digitally scanned and georeferenced historic maps from The Harvard Map Collection as part of the Imaging the Urban Environment project. Maps selected for this project represent major urban areas and cities of the world, at various time periods. These maps typically portray both natural and manmade features at a large scale. The selection represents a range of regions, originators, ground condition dates, scales, and purposes.

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  2. Title: Vienna, Austria, 1770 (Image 3 of 4) (Raster Image)

    Contributors:

    Summary: This layer is a georeferenced raster image of the historic paper map entitled: Grund Riss der Ka?. K?ningl. residenz stadt Wien unter glorw?rdigster Regierung be?der ma?ten. Josephs des IIten. R?m. Ka?sers un Mari? Theresi? R?m. Ka?serin und Apost. K?nigin auf allerh?chsten Befehl, unter der Direction dero hof Mathematici Joseph Nagel aufgenommen von den N.?. Reg.Ingenieur Franz Gruss und Joseph Ne?ssner ; J.E. Mansfeld Sculp. It was published in 1770. Scale [ca. 1:1,300]. Covers Vienna, Austria. This layer is image 3 of 4 total images, representing the northeast portion of the four sheet source map. Map in German. The image inside the map neatline is georeferenced to the surface of the earth and fit to the MGI 3-Degree Gauss Kruger coordinate system. All map collar and inset information is also available as part of the raster image, including any inset maps, profiles, statistical tables, directories, text, illustrations, index maps, legends, or other information associated with the principal map.This map shows features such as roads, drainage, built-up areas and selected buildings, fortification and more.This layer is part of a selection of digitally scanned and georeferenced historic maps from The Harvard Map Collection as part of the Imaging the Urban Environment project. Maps selected for this project represent major urban areas and cities of the world, at various time periods. These maps typically portray both natural and manmade features at a large scale. The selection represents a range of regions, originators, ground condition dates, scales, and purposes.

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  3. Title: Vienna, Austria, 1770 (Image 1 of 4) (Raster Image)

    Contributors:

    Summary: This layer is a georeferenced raster image of the historic paper map entitled: Grund Riss der Ka?. K?ningl. residenz stadt Wien unter glorw?rdigster Regierung be?der ma?ten. Josephs des IIten. R?m. Ka?sers un Mari? Theresi? R?m. Ka?serin und Apost. K?nigin auf allerh?chsten Befehl, unter der Direction dero hof Mathematici Joseph Nagel aufgenommen von den N.?. Reg.Ingenieur Franz Gruss und Joseph Ne?ssner ; J.E. Mansfeld Sculp. It was published in 1770. Scale [ca. 1:1,300]. Covers Vienna, Austria. This layer is image 1 of 4 total images, representing the southeast portion of the four sheet source map. Map in German. The image inside the map neatline is georeferenced to the surface of the earth and fit to the MGI 3-Degree Gauss Kruger coordinate system. All map collar and inset information is also available as part of the raster image, including any inset maps, profiles, statistical tables, directories, text, illustrations, index maps, legends, or other information associated with the principal map.This map shows features such as roads, drainage, built-up areas and selected buildings, fortification and more.This layer is part of a selection of digitally scanned and georeferenced historic maps from The Harvard Map Collection as part of the Imaging the Urban Environment project. Maps selected for this project represent major urban areas and cities of the world, at various time periods. These maps typically portray both natural and manmade features at a large scale. The selection represents a range of regions, originators, ground condition dates, scales, and purposes.

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  4. Title: Vienna, Austria, 1770 (Image 2 of 4) (Raster Image)

    Contributors:

    Summary: This layer is a georeferenced raster image of the historic paper map entitled: Grund Riss der Ka?. K?ningl. residenz stadt Wien unter glorw?rdigster Regierung be?der ma?ten. Josephs des IIten. R?m. Ka?sers un Mari? Theresi? R?m. Ka?serin und Apost. K?nigin auf allerh?chsten Befehl, unter der Direction dero hof Mathematici Joseph Nagel aufgenommen von den N.?. Reg.Ingenieur Franz Gruss und Joseph Ne?ssner ; J.E. Mansfeld Sculp. It was published in 1770. Scale [ca. 1:1,300]. Covers Vienna, Austria. This layer is image 2 of 4 total images, representing the southwest portion of the four sheet source map. Map in German. The image inside the map neatline is georeferenced to the surface of the earth and fit to the MGI 3-Degree Gauss Kruger coordinate system. All map collar and inset information is also available as part of the raster image, including any inset maps, profiles, statistical tables, directories, text, illustrations, index maps, legends, or other information associated with the principal map.This map shows features such as roads, drainage, built-up areas and selected buildings, fortification and more.This layer is part of a selection of digitally scanned and georeferenced historic maps from The Harvard Map Collection as part of the Imaging the Urban Environment project. Maps selected for this project represent major urban areas and cities of the world, at various time periods. These maps typically portray both natural and manmade features at a large scale. The selection represents a range of regions, originators, ground condition dates, scales, and purposes.

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  5. Title: Global GIS : Global Climate Database : Temperature

    Contributors:

    Summary: This datalayer is a point shapefile that shows long-term (1931-1960) mean monthly values for temperatures (in degrees Celsius) on a global terrestrial grid at 0.5 degree longitude/latitude spatial resolution. The dataset is a derived portion of the Global Climate Database (May 15, 1996) which is an updated version of the IIASA database for mean monthly values of temperature, precipitation and cloudiness on a global terrestrial grid (1991), first produced by Rik Leemans and Wolfgang Cramer, and published by the International Institute of Applied Systems Analyses and also distributed by the National Institute of Public Health and Environmental Protection (Netherlands). This version of the datalayer appears as part of the USGS Global GIS : global coverage database (2003). The USGS Global GIS database contains a wealth of USGS and other public domain data, including global coverages of elevation, landcover, seismicity, and resources of minerals and energy at a nominal scale of 1:1 million. The U.S. Geological Survey (USGS) and The American Geological Institute (AGI) announced a cooperative agreement that will focus on making the USGS Global Geographic Information System (GIS) database readily available to educators and the general public in the form of a DVD based world atlas.

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  6. Title: Global GIS : Global Climate Database : Actual evapotranspiration

    Contributors:

    Summary: This datalayer is a point shapefile that shows long-term (1931-1960) mean monthly values for actual evapotranspiration (AE) (in millimeters) on a global terrestrial grid at 0.5 degree longitude/latitude spatial resolution. The dataset is a derived portion of the Global Climate Database (May 15, 1996) which is an updated version of the IIASA database for mean monthly values of temperature, precipitation and cloudiness on a global terrestrial grid (1991), first produced by Rik Leemans and Wolfgang Cramer, and published by the International Institute of Applied Systems Analyses and also distributed by the National Institute of Public Health and Environmental Protection (Netherlands). This version of the datalayer appears as part of the USGS Global GIS : global coverage database (2003). The evapotranspiration scheme used is developed by Prentice et al. Its reference is: Prentice, I.C., Sykes, M. Cramer, W., 1993. A simulation model for the transient effects of climate change on forest landscapes. Ecological Modelling, 65: 51-70. The USGS Global GIS database contains a wealth of USGS and other public domain data, including global coverages of elevation, landcover, seismicity, and resources of minerals and energy at a nominal scale of 1:1 million. The U.S. Geological Survey (USGS) and The American Geological Institute (AGI) announced a cooperative agreement that will focus on making the USGS Global Geographic Information System (GIS) database readily available to educators and the general public in the form of a DVD based world atlas.

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  7. Title: Global GIS : Global Climate Database : Cloud coverage

    Contributors:

    Summary: This datalayer is a point shapefile that shows long-term (1931-1960) mean monthly values for cloud cover on a global terrestrial grid at 0.5 degree longitude/latitude spatial resolution. The dataset is a derived portion of the Global Climate Database (May 15, 1996) which is an updated version of the IIASA database for mean monthly values of temperature, precipitation and cloudiness on a global terrestrial grid (1991), first produced by Rik Leemans and Wolfgang Cramer, and published by the International Institute of Applied Systems Analyses and also distributed by the National Institute of Public Health and Environmental Protection (Netherlands). This version of the datalayer appears as part of the USGS Global GIS : global coverage database (2003). Cloud Coverage or Cloudiness is defined as the actual number of bright sunshine hours over the potential number, and is thus expressed as a percentage figure. A high percentage means more sunshine and fewer clouds. The USGS Global GIS database contains a wealth of USGS and other public domain data, including global coverages of elevation, landcover, seismicity, and resources of minerals and energy at a nominal scale of 1:1 million. The U.S. Geological Survey (USGS) and The American Geological Institute (AGI) announced a cooperative agreement that will focus on making the USGS Global Geographic Information System (GIS) database readily available to educators and the general public in the form of a DVD based world atlas.

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  8. Title: Global GIS : Global Climate Database : Precipitation

    Contributors:

    Summary: This datalayer is a point shapefile that shows long-term (1931-1960) mean monthly values for precipitation (in millimeters) on a global terrestrial grid at 0.5 degree longitude/latitude spatial resolution. The dataset is a derived portion of the Global Climate Database (May 15, 1996) which is an updated version of the IIASA database for mean monthly values of temperature, precipitation and cloudiness on a global terrestrial grid (1991), first produced by Rik Leemans and Wolfgang Cramer, and published by the International Institute of Applied Systems Analyses and also distributed by the National Institute of Public Health and Environmental Protection (Netherlands). This version of the datalayer appears as part of the USGS Global GIS : global coverage database (2003). The USGS Global GIS database contains a wealth of USGS and other public domain data, including global coverages of elevation, landcover, seismicity, and resources of minerals and energy at a nominal scale of 1:1 million. The U.S. Geological Survey (USGS) and The American Geological Institute (AGI) announced a cooperative agreement that will focus on making the USGS Global Geographic Information System (GIS) database readily available to educators and the general public in the form of a DVD based world atlas.

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  9. Title: Global GIS : Global Climate Database : Potential evapotranspiration

    Contributors:

    Summary: This datalayer is a point shapefile that shows long-term (1931-1960) mean monthly values for potential evapotranspiration (PET) (in millimeters) on a global terrestrial grid at 0.5 degree longitude/latitude spatial resolution. The dataset is a derived portion of the Global Climate Database (May 15, 1996) which is an updated version of the IIASA database for mean monthly values of temperature, precipitation and cloudiness on a global terrestrial grid (1991), first produced by Rik Leemans and Wolfgang Cramer, and published by the International Institute of Applied Systems Analyses and also distributed by the National Institute of Public Health and Environmental Protection (Netherlands). This version of the datalayer appears as part of the USGS Global GIS : global coverage database (2003). The evapotranspiration scheme used is developed by Prentice et al. Its reference is: Prentice, I.C., Sykes, M. Cramer, W., 1993. A simulation model for the transient effects of climate change on forest landscapes. Ecological Modelling, 65: 51-70. The USGS Global GIS database contains a wealth of USGS and other public domain data, including global coverages of elevation, landcover, seismicity, and resources of minerals and energy at a nominal scale of 1:1 million. The U.S. Geological Survey (USGS) and The American Geological Institute (AGI) announced a cooperative agreement that will focus on making the USGS Global Geographic Information System (GIS) database readily available to educators and the general public in the form of a DVD based world atlas.

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  10. Title: (Composite of) To His Royal Highness George Augustus Frederick ... This Topographical map of the Province of Lower Canada, shewing its division into Districts Counties, Seigniories, & Townships ... Is ... Most gratefully dedicated by .. Joseph Bouchette, His Majesty's Surveyor General of the Province & Lieutt. Colonel C.M. ... Published by W. Faden, Charing Cross, Augst. 12th. 1815. Engraved by J. Walker & Sons, 47 Bernard Street, Russell Square, London. J. Walker sculp. (with) Town of Three Rivers. (with) City of Quebec. (with) Town of Montreal .. (Raster Image)

    Contributors:

    Summary: This layer is a georeferenced image of a map of Canada originally created by J. Bouchette in 1815. The original map appears in "(Description Topograph Du Bas Canada) (with) To His Royal Highness George Augustus Frederick ... This Topographical Map of the Province of Lower Canada, Shewing its division into Districts, Counties, Seigniories, & Townships ... Is ... Most Gratefully Dedicated ... Joseph Bouchette, His Majesty's Surveyr General of the Province & Lieutt. Colonel C.M. ... Published by W. Faden, Charing Cross, Augst. 12th 1815. Engraved by J. Walker & Sons, 47 Bernard Street, Russell Square, London. (with) Map of the Provinces of Upper & Lower Canada with the Adjacent Parts of the United States Of America &c. Compiled from the latest Surveys and Adjusted from the most recent and Approved Astronomical Observations by Joseph Bouchette ... Augst 12th, 1815, by W. Faden ... (with) Plan of the District of Gaspe ... Augst 12th, 1815" The historic map layers in the Google Earth Rumsey Map Collection have been selected by David Rumsey from his large collection of historical maps, as well as some from other collections with which he collaborates. All the maps contain rich information about the past and represent a sampling of time periods, scales, and cartographic art, resulting in visual history stories that only old maps can tell. Each map has been georeferenced by Rumsey, thus creating unique digital map images that allow the old maps to appear in their correct places on the modern globe. Some of the maps fit perfectly in their modern spaces, while othersgenerally earlier period mapsreveal interesting geographical misconceptions of their time. Cultural features on the maps can be compared to the modern satellite views using the slider bars to adjust transparency. The result is an exploration of time as well as space, a marriage of historic cartographic masterpieces with innovative contemporary software tools.

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  11. Title: (Composite of) City of Quebec (Raster Image)

    Contributors:

    Summary: This layer is a georeferenced image of a map of Quebec. The map is a composite of the 4 easternmost sheets of 10-sheet engraved map of lower Canada. The original map appears in (Description Topograph Du Bas Canada) (with) To His Royal Highness George Augustus Frederick ... This Topographical Map of the Province of Lower Canada, Shewing its division into Districts, Counties, Seigniories, & Townships ... Is ... Most Gratefully Dedicated ... Joseph Bouchette, His Majesty's Surveyr General of the Province & Lieutt. Colonel C.M. ... Published by W. Faden, Charing Cross, Augst. 12th 1815. Engraved by J. Walker & Sons, 47 Bernard Street, Russell Square, London. (with) Map of the Provinces of Upper & Lower Canada with the Adjacent Parts of the United States Of America &c. Compiled from the latest Surveys and Adjusted from the most recent and Approved Astronomical Observations by Joseph Bouchette ... Augst 12th, 1815, by W. Faden ... (with) Plan of the District of Gaspe ... Augst 12th, 1815.The historic map layers in the Google Earth Rumsey Map Collection have been selected by David Rumsey from his large collection of historical maps, as well as some from other collections with which he collaborates. All the maps contain rich information about the past and represent a sampling of time periods, scales, and cartographic art, resulting in visual history stories that only old maps can tell. Each map has been georeferenced by Rumsey, thus creating unique digital map images that allow the old maps to appear in their correct places on the modern globe. Some of the maps fit perfectly in their modern spaces, while othersgenerally earlier period mapsreveal interesting geographical misconceptions of their time. Cultural features on the maps can be compared to the modern satellite views using the slider bars to adjust transparency. The result is an exploration of time as well as space, a marriage of historic cartographic masterpieces with innovative contemporary software tools.

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  12. Title: (Composite of) (Plan stolichnago goroda Sanktpeterburga s izobraheniem znatiieshikh onago prospektov, izdannyi trudami Imperatorskoi Akademii nauk i khudozhestv. Plan de la ville de St. Petersbourg avec ses principales vues dessine & grave sous la direction de l'Academie imperiale des sciences et des arts) (Raster Image)

    Contributors:

    Summary: This layer is a georeferenced image of a map of St. Petersburg, Russia (1753). The original map includes 1 map on 9 sheets. The historic map layers in the Google Earth Rumsey Map Collection have been selected by David Rumsey from his large collection of historical maps, as well as some from other collections with which he collaborates. All the maps contain rich information about the past and represent a sampling of time periods, scales, and cartographic art, resulting in visual history stories that only old maps can tell. Each map has been georeferenced by Rumsey, thus creating unique digital map images that allow the old maps to appear in their correct places on the modern globe. Some of the maps fit perfectly in their modern spaces, while othersgenerally earlier period mapsreveal interesting geographical misconceptions of their time. Cultural features on the maps can be compared to the modern satellite views using the slider bars to adjust transparency. The result is an exploration of time as well as space, a marriage of historic cartographic masterpieces with innovative contemporary software tools.

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  13. Title: Post Roads, Central and Eastern Europe Regions, 1802 (Raster Image)

    Contributors:

    Summary: This layer is a georeferenced raster image of the historic paper map entitled: A new map of the post roads of Germany and Hungary with the adjacent kingdoms, republics and states : from the large map published at Vienna, with additions and improvements by J. Enouy, geogr. It was published by Laurie & Whittle, 53 Fleet Street in 1802. Scale [ca. 1:2,500,000]. Covers the Central and Eastern Europe regions. The image inside the map neatline is georeferenced to the surface of the earth and fit to the Europe Lambert Conformal Conic coordinate system. All map collar and inset information is also available as part of the raster image, including any inset maps, profiles, statistical tables, directories, text, illustrations, index maps, legends, or other information associated with the principal map. This map shows features such as drainage, cities and other human settlements, postal roads, territorial and administrative boundaries, shoreline features, and more. Relief shown pictorially.This layer is part of a selection of digitally scanned and georeferenced historic maps from the Harvard Map Collection. These maps typically portray both natural and manmade features. The selection represents a range of originators, ground condition dates, scales, and map purposes.

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  14. Title: Switzerland, 1799 (Raster Image)

    Contributors:

    Summary: This layer is a georeferenced raster image of the historic paper map entitled: Carte de la partie la plus elevee de la Suisse : dessinee en perspective du nord au midi : d'apres le plan en relief et les mesures du General Pfyffer, reduites sous son inspection a 150 tois de France par ligne, par Joseph Clausner, graveur a Zoug. It was published by Chr. de Mechel in 1799. Scale [ca. 1:146,175]. Covers a portion the central Switzerland (Zentralschweiz) region. Map in French. The image inside the map neatline is georeferenced to the surface of the earth and fit to the Europe Lambert Conformal Conic coordinate system. All map collar and inset information is also available as part of the raster image, including any inset maps, profiles, statistical tables, directories, text, illustrations, index maps, legends, or other information associated with the principal map. This map shows features such as drainage, cities, villages, and other human settlements, roads, and more. Relief shown by hachures. Includes also a profile of the most important mountains with their altitudes.This layer is part of a selection of digitally scanned and georeferenced historic maps from the Harvard Map Collection. These maps typically portray both natural and manmade features. The selection represents a range of originators, ground condition dates, scales, and map purposes.

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  15. Title: Venice, Italy, 1849 (Raster Image)

    Contributors:

    Summary: This layer is a georeferenced raster image of the historic paper map entitled: Pianta della R. citta di Venezia secondo lo state presente, pr. lit. Kier ; Gugliemo Tempel incise. It was published by Giuseppe Kier, Premiato Litografo in [1849]. Scale [ca. 1:5,800]. Map in Italian. The image inside the map neatline is georeferenced to the surface of the earth and fit to the European Datum 1950 UTM Zone 33N coordinate system. All map collar and inset information is also available as part of the raster image, including any inset maps, profiles, statistical tables, directories, text, illustrations, index maps, legends, or other information associated with the principal map. This map shows features such as roads, canals, drainage, built-up areas and selected buildings, and more. Relief is shown by hachures. Includes indexes. This layer is part of a selection of digitally scanned and georeferenced historic maps from The Harvard Map Collection as part of the Imaging the Urban Environment project. Maps selected for this project represent major urban areas and cities of the world, at various time periods. These maps typically portray both natural and manmade features at a large scale. The selection represents a range of regions, originators, ground condition dates, scales, and purposes.

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  16. Title: Map of the upper part of the Island of Manhattan above Eighty-Sixth Street arranged to illustrate the Battle of Harlem Heights

    Contributors:

    Summary: Relief shown by hachures. "Lith. by W.C. Rogers & Co. for Joseph Shannon's Manual 1868." Oriented with north toward the upper right. Includes notes.

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  17. Title: Port Natal

    Contributors:

    Summary: Map showing coastline of Cape Natal and the city of Durban; relief shown by hachures and soundings. Map includes profiles: Coast between the Umlass and Uncomass Rivers -- Mouth of Umlass R. -- C. Natal (bluff) N.E.b.E. -- Cape Natal (bluff) flagstaff -- Bar -- Sandy Point -- Blockhouse W.S.W. -- Sandy Point marks -- Bluff marks (white). At head of title: Africa, south east coast.

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  18. Title: Charte von Nord America : nach Arrowsmith; v. Humboldt und anderen verlässigen hülfts-mitteln / entworfen von Joseph Dirwald[t]

    Contributors:

    Summary: Ferro. Relief shown by hachures. "Verlegt in Wien bey Tranquillo Mollo.";1 map in 4 sections, colored;82 x 113 cm. (Sections each 44 x 59 cm.)

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  19. Title: Herzogthum Nassau, Landgrafschaft Hessen Homburg und die Freie Stadt Frankfurt a/M entw. u. gez. von J. Grassl. 1851. (with) Plan von Wiesbaden. (with) Frankfurt a/M. (with) Landgrafs. Hessen Homburg, Herrschaft Meisenheim. Stich, Druck und Verlag des Bibliographischen Instituts in Hildburghausen, (1860) (Raster Image)

    Contributors:

    Summary: This layer is a georeferenced image of a map of Nassau, Germany created in 1851. The original map appears in "Grosser Hand - Atlas Uber Alle Theile Der Erde In 170 Karten. Herausgegeben von J. Meyer. Hildburghausen Verlag des Bibliographischen Instituts." The historic map layers in the Google Earth Rumsey Map Collection have been selected by David Rumsey from his large collection of historical maps, as well as some from other collections with which he collaborates. All the maps contain rich information about the past and represent a sampling of time periods, scales, and cartographic art, resulting in visual history stories that only old maps can tell. Each map has been georeferenced by Rumsey, thus creating unique digital map images that allow the old maps to appear in their correct places on the modern globe. Some of the maps fit perfectly in their modern spaces, while othersgenerally earlier period mapsreveal interesting geographical misconceptions of their time. Cultural features on the maps can be compared to the modern satellite views using the slider bars to adjust transparency. The result is an exploration of time as well as space, a marriage of historic cartographic masterpieces with innovative contemporary software tools.

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  20. Title: Freiburg. Entworfen und bearbeitet von Woerl, in Stein gestochen unter seiner Leitung -1831. Im Herder'schen Kunst- Institut in Freiburg im Breisgau. (to accompany) Karte der Schweiz, von Dr. I. Woerl. Lithographie von B. Herder in Freiburg im Breisgau (Raster Image)

    Contributors:

    Summary: This layer is a georeferenced image of a map of Freiburg (1835). The map showa cities, roads, fortifications, canals, and major public buildings. The original map appears in Karte der Schweiz, von Dr. I. Woerl. Lithographie von B. Herder in Freiburg im Breisgau. Mitglied der königl. Academie der Kriegswissenschaften in Schweden, der königl. geographischen Societaeten zu London und Paris, der historischen Gesellschaft zu Freiburg i. B. etc.The historic map layers in the Google Earth Rumsey Map Collection have been selected by David Rumsey from his large collection of historical maps, as well as some from other collections with which he collaborates. All the maps contain rich information about the past and represent a sampling of time periods, scales, and cartographic art, resulting in visual history stories that only old maps can tell. Each map has been georeferenced by Rumsey, thus creating unique digital map images that allow the old maps to appear in their correct places on the modern globe. Some of the maps fit perfectly in their modern spaces, while othersgenerally earlier period mapsreveal interesting geographical misconceptions of their time. Cultural features on the maps can be compared to the modern satellite views using the slider bars to adjust transparency. The result is an exploration of time as well as space, a marriage of historic cartographic masterpieces with innovative contemporary software tools.

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