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  1. Title: Africa from the latest Authorities (Raster Image)

    Contributors:

    Summary: This layer is a georeferenced raster image of an historic continental map of Africa from 1806 titled "Africa form the latest authorities." This map was published by Brightly & Kimersly and engraved by Barlow. 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 from the Oscar I. Norwich Collection at Stanford University. 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 1200.22 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. Barlow and Stanford Geospatial Center. (2013). Africa from the latest Authorities (Raster Image). Stanford Digital Repository. Available at: http://purl.stanford.edu/vz360ty9195. The Oscar I. Norwich Collection consists of over 300 maps published from the 15th to the early 20th century. More information about this collection can be accessed here: http://purl.stanford.edu/qb438pg7646. For more information about Stanford's Maps of Africa Collection, see here: https://exhibits.stanford.edu/maps-of-africa/default-exhibit. This layer is presented in the WGS84 coordinate system for web display purposes. Downloadable data are provided in native coordinate system or projection.

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  2. Title: Carte réduite des côtes orientales de l'Amérique septentrionale: contenant partie du Nouveau Jersey, la Pen-sylvanie, le Mary-land, la Virginie, la Caroline septentrionale, la Caroline méridionale et la Georgie: assujettie aux observations les plus récentes et aux cartes de détail les plus estimées; dressée au Dépôt géneŕal des cartes, plans et journaux de la Marine, pour le service des Vaisseux Français; par ordre de M. de Sartine, conseiller dʹEtat, ministre et secretaire d'Etat, ayant le Départment de la Marine; gravé par Petit.

    Contributors:

    Summary: Relief shown by hachures. Depths shown by soundings. Prime meridian: Paris. In upper right margin: No. 2. (Hyd. No. 62). 1 map; 57 x 84 cm.

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  3. Title: Map of the Thunder Bay and Lake Nipigon Regions

    Contributors:

    Summary: 1 map on 3 sheets; 109 x 100 cm.. Longitude west from Greenwich

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  4. Title: Map of a portion of British Columbia showing the coalfields of Comox, Nanaimo & Cowitchin on Vancouver and adjacent islands and the distribution of the cretaceous coal bearing rocks : also the tertiary rocks of Sooke & Burrard Inlet, to illustrate the report of Mr. James Richardson

    Contributors:

    Summary: Greenwich prime meridian.; Relief shown by hachures and spot heights.; Includes 3 profiles. 77 x 88 centimeters Scale approximately 1:250,000 General Map Collection

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  5. Title: Map of a portion of British Columbia showing the coalfields of Comox, Nanaimo & Cowitchin on Vancouver and adjacent islands and the distribution of the cretaceous coal bearing rocks also the tertiary rocks of Sooke & Burrard Inlet, to illustrate the report of Mr. James Richardson; compiled & drawn by R. Barlow, Ch. Draftsn., Geo. Sur.

    Contributors:

    Summary: Greenwich prime meridian. Relief shown by hachures and spot heights. Includes 3 profiles. 1 map: col.; 77 x 88 cm

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  6. Title: A chart of magnetic curves of equal variation

    Contributors:

    Summary: World map showing magnetic curves. In lower right margin: Engd. by G. Aikman. Plate III-I from: General atlas of the world. Edinburgh : A. and C. Black, 1854. Prime meridian: Greenwich.

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  7. Title: Geological and topographical map of the northern part of the Lake of the Woods and adjacent country; by A.C. Lawson; compiled and drawn by A.E. Barlow.

    Contributors:

    Summary: Includes notes and sources of information. 1 map: col.; 61 x 93 cm.

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