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imageryBaseMapsEarthCover/topoUsgs24k1945 (ImageServer)

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View Footprint In:   ArcGIS Online map viewer

Service Description:

This layer includes the 15', 1:62500 USGS topographic maps for Maine from the mid 1900s, mostly ranging from 1920 to 1965. There are 190 quads in this layer, covering all of the state. Eight quads did not have maps from this era, so their earlier maps were used and are duplicates from the circa 1910 series for Maine as early as 1904. These are Petit Manan (1904) Monhegan (1906), Tenants Harbor (1906), Matinicus (1906), Belfast (1917), Cutler (1918), and Great Wass Island (1921). The maps were scanned from paper copies, georeferenced, and then had the collars clippled and the edges mosaicked. Most maps were scanned originally at 600dpi, either by MEGIS or USGS. All georeferencing of these was done by USGS. A few quads were not either in the collection of Maine or USGS, and in those cases quarter-quads were downloaded from the UNH library web site, those quarters were then georeferenced separately and if needed, rubber-sheeted along seamlines to make the quad. Most of these quads indicate land cover (green areas). Note that the source paper maps vary considerably in their paper color, ink contrast, fading, and so forth. The user will see great variation between quads which cannot be made more consistent at this time.



Name: imageryBaseMapsEarthCover/topoUsgs24k1945

Description:

This layer includes the 15', 1:62500 USGS topographic maps for Maine from the mid 1900s, mostly ranging from 1920 to 1965. There are 190 quads in this layer, covering all of the state. Eight quads did not have maps from this era, so their earlier maps were used and are duplicates from the circa 1910 series for Maine as early as 1904. These are Petit Manan (1904) Monhegan (1906), Tenants Harbor (1906), Matinicus (1906), Belfast (1917), Cutler (1918), and Great Wass Island (1921). The maps were scanned from paper copies, georeferenced, and then had the collars clippled and the edges mosaicked. Most maps were scanned originally at 600dpi, either by MEGIS or USGS. All georeferencing of these was done by USGS. A few quads were not either in the collection of Maine or USGS, and in those cases quarter-quads were downloaded from the UNH library web site, those quarters were then georeferenced separately and if needed, rubber-sheeted along seamlines to make the quad. Most of these quads indicate land cover (green areas). Note that the source paper maps vary considerably in their paper color, ink contrast, fading, and so forth. The user will see great variation between quads which cannot be made more consistent at this time.



Single Fused Map Cache: false

Extent: Initial Extent: Full Extent: Pixel Size X: 5.0

Pixel Size Y: 5.0

Band Count: 3

Pixel Type: U8

RasterFunction Infos: N/A

Mensuration Capabilities:

Has Histograms: true

Has Colormap: false

Has Multi Dimensions : false

Rendering Rule:

Min Scale: 0

Max Scale: 0

Copyright Text: USGS

Service Data Type: esriImageServiceDataTypeRGB

Min Values: 0, 0, 0

Max Values: 255, 255, 255

Mean Values: 193.14305840027174, 213.87576635085952, 159.0165357275152

Standard Deviation Values: 37.88275132572976, 36.462876439204685, 53.74831938765775

Object ID Field: OBJECTID

Fields: Default Mosaic Method: Northwest

Allowed Mosaic Methods: NorthWest,Center,LockRaster,ByAttribute,Nadir,Viewpoint,Seamline,None

SortField:

SortValue: null

Mosaic Operator: First

Default Compression Quality: 75

Default Resampling Method: Nearest

Max Record Count: 1000

Max Image Height: 4100

Max Image Width: 15000

Max Download Image Count: 20

Max Mosaic Image Count: 20

Allow Raster Function: true

Allow Compute TiePoints: false

Supports Statistics: true

Supports Advanced Queries: true

Use StandardizedQueries: true

Raster Type Infos: Has Raster Attribute Table: false

Edit Fields Info: null

Ownership Based AccessControl For Rasters: null

Child Resources:   Info   Histograms   Key Properties   Legend   MultiDimensionalInfo   rasterFunctionInfos

Supported Operations:   Export Image   Query   Identify   Measure   Compute Histograms   Compute Statistics Histograms   Get Samples   Compute Class Statistics