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Louisbourg and Louisbourg Harbour, Nova Scotia, Canada, 1745 (Thomas Jefferys ed.) (Raster Image)
- Identification Information
- Data Quality Information
- Spatial Data Organization Information
- Spatial Reference Information
- Entity and Attribute Information
- Distribution Information
- Metadata Reference Information
- Identification Information
- Citation
- Originator
- Harvard Map Collection, Harvard College Library
- Originator
- Gridley, Richard, ca. 1710-1796.
- Originator
- Jefferys, Thomas, d. 1771.
- Publication Date
- 200902
- Title
- Louisbourg and Louisbourg Harbour, Nova Scotia, Canada, 1745 (Thomas Jefferys ed.) (Raster Image)
- Geospatial Data Presentation Form
- map
- Publication Information
- Publication Place
- Cambridge, Massachusetts
- Publisher
- Harvard Map Collection, Harvard College Library
- Online Linkage
- https://hgl.harvard.edu/catalog/harvard-g3424-l6s2-1745-g75
- Abstract
- This layer is a georeferenced raster image of the historic paper map entitled: A plan of the city and fortifications of Louisburg from a survey made by Richard Gridley, Lieut. Coll. of the train of artillery in 1745 this important fortress was taken on the 17th of June 1745 after a siege of 49 days by nine regiments (that were raised and equiped in 50 days in New England) and commanded by Sr Willm. Pepperill assisted by a fleet under the commande of Commodore Warren with the loss of 101 men killed and 30 that died by sickness. This place was afterwards restored to the French by the Treaty of Aix la Chapel ; A plan of the City and Harbour of Louisburg with the French batteries shewing that part of Gabarus Bay in which they landed and the ground on which they encamped during the Seige in 1758 [i.e. 1745]. It was published by Thos. Jeffrys, Geographer to the Prince of Wales at Charing Cross Octobr. 9, 1758. Scale [ca. 1:21,500]. This image contains 2 maps, the smaller scale map of Louisbourg Harbour, Nova Scotia, Canada is the portion that is georeferenced. The image inside the map neatline is georeferenced to the surface of the earth and fit to the UTM Zone 20N NAD83 (meters) 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 coastal features such as harbors, inlets, rocks, channels, points, coves, shoals, islands, and more. Includes also selected land features such as roads, cities and towns, fortifications, troop dispositions, and other points of military interest. Relief is shown by hachures. Depths are shown by soundings. Includes a list of explanations, notes, profile, and inset: A map of Gabarus Bay adjoining to Louisburg. 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.
- Purpose
- Historic paper maps can provide an excellent view of the changes that have occurred in the cultural and physical landscape. The wide range of information provided on these maps make them useful in the study of historic geography, and urban and rural land use change. As this map has been georeferenced, it can be used in a GIS as a source or background layer in conjunction with other GIS data.
- Temporal Extent
- Currentness Reference
- source map ground condition
- Time Instant
- 1745
- Bounding Box
- West
- -60.152836
- East
- -59.907968
- North
- 45.964554
- South
- 45.835064
- Theme Keyword
- Maps
- Nautical charts
- Coasts
- Bodies of water
- Harbors
- Hydrography
- Human settlements
- Cities and towns
- Land use
- Landforms
- Infrastructure (Economics)
- Transportation
- Fortification
- Theme Keyword Thesaurus
- LCSH
- ISO Topic Category
- imageryBaseMapsEarthCover
- transportation
- intelligenceMilitary
- Place Keyword
- Canada
- Nova Scotia
- Louisbourg
- Louisbourg Harbour
- Place Keyword Thesaurus
- GNS (NIMA)
- Temporal Keyword
- Access Restrictions
- None
- Use Restrictions
- For educational, non-commercial use only.
- Status
- Complete
- Maintenance and Update Frequency
- None planned
- Point of Contact
- Contact Organization
- Harvard Map Collection, Harvard College Library
- Delivery Point
- Harvard Map Collection
- Delivery Point
- Pusey Library
- Delivery Point
- Harvard University
- City
- Cambridge
- State
- MA
- Postal Code
- 02138
- Country
- USA
- Contact Telephone
- 617-495-2417
- Contact Facsimile Telephone
- 617-496-0440
- Contact Electronic Mail Address
- hgl_ref@hulmail.harvard.edu
- Hours of Service
- Monday - Friday, 9:00 am - 4:00 pm EST-USA
- Native Data Set Environment
- ESRI ArcGIS 9.2
- Data Quality Information
- Attribute Accuracy Report
- The georeferenced raster is a faithfully reproduced digital image of the original source map. Some differences may be detected between the source graphic used and the raster image due to the RGB values assigned that particular color. The intent is to recreate those colors as near as possible.
- Completeness Report
- Data completeness for raster digital image files reflect content of the source graphic. Features may have been eliminated or generalized on the source graphic due to scale and legibility constraints
- Horizontal Positional Accuracy Report
- 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, errors in the raster image are small compared with sources of error in the original map graphic. The RMS error for this map is 272.42746 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.
- Lineage
- Source
- Originator
- Gridley, Richard, ca. 1710-1796.
- Originator
- Jefferys, Thomas, d. 1771.
- Publication Date
- 1758
- Title
- A plan of the city and fortifications of Louisburg from a survey made by Richard Gridley, Lieut. Coll. of the train of artillery in 1745, this important fortress was taken on the 17th of June 1745 after a siege of 49 days by nine regiments (that were raised and equiped in 50 days in New England) and commanded by Sr Willm. Pepperill assisted by a fleet under the commande of Commodore Warren with the loss of 101 men killed and 30 that died by sickness. This place was afterwards restored to the French by the Treaty of Aix la Chapel ; A plan of the City and Harbour of Louisburg with the French batteries shewing that part of Gabarus Bay in which they landed and the ground on which they encamped during the Seige in 1758 [i.e. 1745].
- Geospatial Data Presentation Form
- map
- Publication Information
- Publication Place
- London
- Publisher
- Thos. Jeffrys, Geographer to the Prince of Wales at Charing Cross
- Other Citation Details
- 2 maps on 1 sheet ; 38 x 62 cm., each map 38 x 45 cm., or smaller. Appears in: The natural and civil history of the French dominions ... / T. Jefferys. London: Thos. Jeffrys, 1760.
- Source Scale Denominator
- 21500
- Type of Source Media
- paper
- Source Temporal Extent
- Time Period Information
- Single Date/Time
- Calendar Date
- 1745
- Source Currentness Reference
- ground condition
- Contribution
- Source map for raster image
- Spatial Data Organization Information
- Direct Spatial Reference Method
- Raster
- Raster Object Information
- Raster Object Type
- Pixel
- Row Count
- 6438
- Column Count
- 8318
- Vertical Count
- 1
- Spatial Reference Information
- Horizontal Coordinate System Definition
- Planar
- Grid Coordinate System
- Grid Coordinate System Name
- Universal Transverse Mercator
- Universal Transverse Mercator
- UTM Zone Number
- 20
- Transverse Mercator
- Scale Factor at Central Meridian
- 0.999600
- Longitude of Central Meridian
- -63.000000
- Latitude of Projection Origin
- 0.000000
- False Easting
- 500000.000000
- False Northing
- 0.000000
- Planar Coordinate Information
- Planar Coordinate Encoding Method
- row and column
- Coordinate Representation
- Abscissa Resolution
- 2.225231
- Ordinate Resolution
- 2.130609
- Planar Distance Units
- meters
- Geodetic Model
- Horizontal Datum Name
- North American Datum of 1983
- Ellipsoid Name
- Geodetic Reference System 80
- Semi-major Axis
- 6378137.000000
- Denominator of Flattening Ratio
- 298.257222
- Entity and Attribute Information
- Entity and Attribute Overview
- The indexes reference a color palette of RGB values from 0 through 255, representing the color value from the original paper sheet map. The colors on that sheet can represent relief, drainage, vegetation, populated places, cultural features, coastal hydrography, transportation features (roads, railroads, tracks and trails), spot elevations and boundaries. The colors are sometimes explained in a legend that is incorporated into the map inset or collar.
- Entity and Attribute Detail Citation
- Not applicable.
- Distribution Information
- Format Name
- TIFF
- Distributor
- Harvard University Library
- Online Access
- http://hgl.harvard.edu/
- Name
- Metadata Reference Information
- Metadata Date
- 20090225
- Metadata Contact
- Contact Information
- Contact Organization Primary
- Contact Organization
- Harvard Geospatial Library
- Contact Position
- Geospatial Resources Cataloger
- Contact Address
- Address
- Harvard University Library
- Address
- Office For Information Systems
- Address
- 90 Mount Auburn Street
- City
- Cambridge
- State or Province
- MA
- Postal Code
- 02138
- Country
- USA
- Contact Voice Telephone
- 617-495-2417
- Contact Facsimile Telephone
- 617-496-0440
- Contact Electronic Mail Address
- hgl_ref@hulmail.harvard.edu
- Hours of Service
- Monday - Friday, 9:00 am - 4:00 pm EST-USA
- Metadata Standard Name
- FGDC Content Standards for Digital Geospatial Metadata
- Metadata Standard Version
- FGDC-STD-001-1998
