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11 results returned

  1. Title: Egypt (Raster Image)

    Contributors:

    Summary: This layer is a georeferenced raster image of an historic regional map of Egypt from 1841, originally created by G.F. Cruchley. 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, or other information associated with the principal map. This map was georeferenced by the Stanford University Geospatial Center using a Transverse Mercator projection. This map is part of a selection of digitally scanned and georeferenced historic maps of Africa held at Stanford University Libraries. This historic paper map provides an historical perspective of the cultural and physical landscape during this time period. The wide range of information provided on these maps make them useful in the study of historic geography. As this map has been georeferenced, it also can be used as a background layer in conjunction with other GIS data. The horizontal positional accuracy of a raster image is approximately the same as the accuracy of the published source map. The lack of a greater accuracy is largely the result of the inaccuracies with the original measurements and possible distortions in the original paper map document. There may also be errors introduced during the digitizing and georeferencing process. In most cases, however, errors in the raster image are small compared with sources of error in the original map graphic. The RMS error for this map is 276.274 meters. This value describes how consistent the transformation is between the different control points (links). The RMS error is only an assessment of the accuracy of the transformation. Cruchley, G.F. and Stanford Geospatial Center. (2013). Egypt (Raster Image). Stanford Digital Repository. Available at: http://purl.stanford.edu/qm654xf7893. For more information about Stanford's Maps of Africa Collection, see here: https://exhibits.stanford.edu/maps-of-africa. This layer is presented in the WGS84 coordinate system for web display purposes. Downloadable data are provided in native coordinate system or projection.

  2. Title: Africa 1841 (Raster Image)

    Contributors:

    Summary: This layer is a georeferenced raster image of an historic continental map of Africa from 1841 originally created by G.F. Crutchley. 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, or other information associated with the principal map. This map was georeferenced by the Stanford University Geospatial Center using a Sinusoidal projection. This map is part of a selection of digitally scanned and georeferenced historic maps of Africa held at Stanford University Libraries. This historic paper map provides an historical perspective of the cultural and physical landscape during this time period. The wide range of information provided on these maps make them useful in the study of historic geography. As this map has been georeferenced, it also can be used as a background layer in conjunction with other GIS data. The horizontal positional accuracy of a raster image is approximately the same as the accuracy of the published source map. The lack of a greater accuracy is largely the result of the inaccuracies with the original measurements and possible distortions in the original paper map document. There may also be errors introduced during the digitizing and georeferencing process. In most cases, however, errors in the raster image are small compared with sources of error in the original map graphic. The RMS error for this map is 555.644 meters. This value describes how consistent the transformation is between the different control points (links). The RMS error is only an assessment of the accuracy of the transformation. Cruchley, G.F. and Stanford Geospatial Center. (2013). Africa 1841 (Raster Image). Stanford Digital Repository. Available at: http://purl.stanford.edu/vh772td2101. For more information about Stanford's Maps of Africa Collection, see here: https://exhibits.stanford.edu/maps-of-africa. This layer is presented in the WGS84 coordinate system for web display purposes. Downloadable data are provided in native coordinate system or projection.

  3. Title: Africa (Raster Image)

    Contributors:

    Summary: This layer is a georeferenced raster image of an historic paper map of Africa. This is a continental map of Africa originally created and published by G.F. Cruchley in 1841. The features illustrated on this map includes: rivers, lakes, and coastal islands. 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, or other information associated with the principal map. This map was georeferenced by the Stanford University Geospatial Center using a Sinusoidal projection. This map is part of a selection of digitally scanned and georeferenced historic maps of Africa held at Stanford University Libraries. This historic paper map provides an historical perspective of the cultural and physical landscape during this time period. The wide range of information provided on these maps make them useful in the study of historic geography. As this map has been georeferenced, it also can be used as a background layer in conjunction with other GIS data. The horizontal positional accuracy of a raster image is approximately the same as the accuracy of the published source map. The lack of a greater accuracy is largely the result of the inaccuracies with the original measurements and possible distortions in the original paper map document. There may also be errors introduced during the digitizing and georeferencing process. In most cases, however, errors in the raster image are small compared with sources of error in the original map graphic. The RMS error for this map is 1679.13 meters. This value describes how consistent the transformation is between the different control points (links). The RMS error is only an assessment of the accuracy of the transformation. Cruchley, G.F. and Stanford Geospatial Center. (2013) Africa (Raster Image). Stanford Digital Repository. Available at: http://purl.stanford.edu/vr426sf1153. For more information about Stanford's Maps of Africa Collection, see here: https://exhibits.stanford.edu/maps-of-africa. This layer is presented in the WGS84 coordinate system for web display purposes. Downloadable data are provided in native coordinate system or projection.

  4. Title: England and Wales, 1863 (Raster Image)

    Contributors:

    Summary: This layer is a georeferenced raster image of the historic paper map entitled: Cruchley's travellers companion through England and Wales, shewing the railways and stations to the present time. It was published by G.F. Cruchley in 1863. Scale [ca. 1:950,400]. Covers also Isle of Man and shoreline of Northern Ireland.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, territorial boundaries, roads, railroads, ferry lines, telegraph lines, shoreline features, and more.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.

  5. Title: Cruchley's reduced ordnance map of London : with 4000 street references and what to see

    Contributors:

    Summary: Shows detached buildings and areas covered by contiguous buildings.; Cover title.; Title at top: Reduced ordnance map of London. 67 x 89 centimeters Scale approximately 1:12,600 City Maps

  6. Title: Reduced ordnance map of London

    Contributors:

    Summary: Relief shown by hachures. Originally issued folded, in covers, with cover title: Cruchley's reduced ordnance map of London.

  7. Title: Cruchley's new postal district map of London

    Contributors:

    Summary: "Additions to 1857." Shows London divided into ten postal districts.

  8. Title: France

    Contributors:

    Summary: Relief shown by hachures. Inset: Corsica. "Published January 1st 1847." Originally issued folded in covers 17 x 12 cm.

  9. Title: Cruchley's new plan of London : shewing all the new and intended improvements to the present time.

    Contributors:

    Summary: Scale: approximately 4 in. to 1 mile. 42 x 61 centimeters Scale approximately 1:15,500. Approximately 4 inch to 1 mile City Maps

  10. Title: Cruchley's new plan of London : improved to 1832.

    Contributors:

    Summary: Map is hand-colored. 55 x 140 centimeters Scale approximately 1:12,672 City Maps

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