Illinois Historical Aerial Photographs: Photo Mosaic County Indexes v.2

Metadata also available as - [Questions & Answers] - [SGML] - [XML]

Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: Illinois State Geological Survey
Publication_Date: Unpublished Material
Title:
Illinois Historical Aerial Photographs: Photo Mosaic County Indexes v.2
Edition: Version 2 (2006)
Geospatial_Data_Presentation_Form: raster digital data
Description:
Abstract:
This data set consists of photo mosaic county indexes of historical black and white aerial photographs from Illinois acquired during the late 1930s and early 1940s. The original paper county indexes have been scanned and saved as TIFF format images. The images available online are MrSID files, in which the original TIFF files were compressed at a target ratio of 10:1 or 6:1 (see process steps "IMAGE COMPRESSION" below). The scale of the data varies from county to county.

These data have not been geometrically corrected.

Purpose:
These data are provided as supplemental imagery to aid in understanding the organization of the historical aerial photography collections.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 1936
Ending_Date: 1941
Currentness_Reference: publication date
Status:
Progress: Complete
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -91.675280
East_Bounding_Coordinate: -87.483350
North_Bounding_Coordinate: 42.564692
South_Bounding_Coordinate: 36.911398
Keywords:
Theme:
Theme_Keyword_Thesaurus: none
Theme_Keyword: aerial
Theme_Keyword: photography
Theme_Keyword: historical
Theme_Keyword: imagery
Theme_Keyword: black and white
Theme_Keyword: scanned
Theme_Keyword: MrSID
Theme_Keyword: TIFF
Theme_Keyword: dpi
Theme_Keyword: grayscale
Place:
Place_Keyword_Thesaurus: none
Place_Keyword: Illinois
Place_Keyword: county
Place_Keyword: Midwest
Place_Keyword: Metro Area
Place_Keyword: Great Lakes
Temporal:
Temporal_Keyword_Thesaurus: none
Temporal_Keyword: Pre-WWII
Temporal_Keyword: Pre-World War II
Temporal_Keyword: WWII
Temporal_Keyword: World War II
Temporal_Keyword: 1936 to 1941
Temporal_Keyword: 1936
Temporal_Keyword: 1937
Temporal_Keyword: 1938
Temporal_Keyword: 1939
Temporal_Keyword: 1940
Temporal_Keyword: 1941
Temporal_Keyword: 1930s
Temporal_Keyword: 1940s
Temporal_Keyword: Great Depression
Temporal_Keyword: Dust Bowl
Access_Constraints: none
Use_Constraints:
Reproduction or redistribution of copyrighted digital data sets or products derived there from outside of licensee organization or entity is expressly forbidden. The only exception is redistribution to consultants working for the licensee, and then only for purposes, related to work for the licensee. Such consultants may not further reproduce or redistribute these data sets. None of these data shall be electronically duplicated on magnetic or optical media for use by others, in whole or in part, without permission of the appropriate custodial division within the Illinois Department of Natural Resources (IDNR).

Any hardcopies utilizing IDNR data sets shall clearly indicate their source. If the licensee has modified the data in any way they are obligated to describe the types of modifications they have performed on the hardcopy map. Licensee specifically agrees not to misrepresent IDNR data sets, nor to imply that changes they made were approved by IDNR.

These data are not to be used for commercial profit.

Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Illinois State Geological Survey
Contact_Position: Information Office
Contact_Address:
Address_Type: mailing and physical address
Address: 615 East Peabody Drive
City: Champaign
State_or_Province: Illinois
Postal_Code: 61820
Country: USA
Contact_Voice_Telephone: 217-333-4747
Contact_TDD/TTY_Telephone: 217-785-0211
Contact_Facsimile_Telephone: 217-244-0802
Contact_Electronic_Mail_Address: isgs@isgs.uiuc.edu
Hours_of_Service: 8:00 a.m. - 4:30 p.m., Monday-Friday, U.S. Central Time
Native_Data_Set_Environment: Microsoft Windows 2000 Version 5.0 (Build 2195) Service Pack 4
Cross_Reference:
Citation_Information:
Originator: Illinois State Geological Survey
Publication_Date: Unpublished Material
Title: Illinois Historical Aerial Photographs: 1936 to 1941
Geospatial_Data_Presentation_Form: raster digital data
Publication_Information:
Publication_Place: Champaign, Illinois
Publisher: Illinois State Geological Survey
Online_Linkage: <URL:http://www.isgs.uiuc.edu/ndsihome/outmeta/ilhap_gen.html>
Cross_Reference:
Citation_Information:
Originator: Illinois State Geological Survey
Publication_Date: Unpublished Material
Title: Illinois Historical Aerial Photographs: County Index Data Layer
Geospatial_Data_Presentation_Form: vector digital data
Publication_Information:
Publication_Place: Champaign, Illinois
Publisher: Illinois State Geological Survey
Online_Linkage: <URL:http://www.isgs.uiuc.edu/ndsihome/outmeta/ilhap_nav.html>
Cross_Reference:
Citation_Information:
Originator: Illinois State Geological Survey
Publication_Date: Unpublished Material
Title:
Illinois Historical Aerial Photographs: Schematic County Indexes
Geospatial_Data_Presentation_Form: raster digital data
Publication_Information:
Publication_Place: Champaign, Illinois
Publisher: Illinois State Geological Survey
Online_Linkage: <URL:http://www.isgs.uiuc.edu/ndsihome/outmeta/l_index.html>
Data_Quality_Information:
Logical_Consistency_Report: Not Applicable
Completeness_Report: Not Applicable
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report: These data have not been geometrically corrected.
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report: These data have not been orthorectified.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: unknown
Publication_Date: Unpublished Material
Title:
Illinois Historical Aerial Photograph Photo Mosaic County Indexes
Geospatial_Data_Presentation_Form: raster digital data
Publication_Information:
Publication_Place: Champaign, Illinois
Publisher: UIUC Map and Geography Library
Source_Scale_Denominator: varies
Type_of_Source_Media: paper
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 1936
Ending_Date: 1941
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: Not Applicable
Source_Contribution: Not Applicable
Process_Step:
Process_Description:
SCANNING METHODOLOGY: Original copies of the county indexes are located at the University of Illinois Map and Geography Library. Special permission was granted by the Library for the county index sheets to be scanned at an offsite location. The indexes were scanned on a large format Eagle 4080 scanner located at the Illinois State Geological Survey. The photo mosaic indexes were scanned at 600 dpi as grayscale images (2001-2004).

In December 2004 Historic Information Gatherers, Inc.(HIG), Hopkins, Minnesota, scanned all of the remaining county index sheets (photo mosaic and line indexes that hadn't already been scanned by the ISGS) available at the UIUC Map and Geography Library (~1700 sheets). In Spring 2005 HIG provided the ISGS with digital images of the photo and line indexes. The indexes were scanned on a large format Vidar Titan Atlas P93 scanner temporarily located at the UIUC Map and Geography Library. The photo mosaic indexes were scanned at 300 dpi as indexed color images (2004).

Process_Date: 2001-2003 & 2004
Process_Step:
Process_Description:
IMAGE MANIPULATION (2003-2004): The photo mosaic indexes were downsampled to 300 dpi using Adobe Photoshop ver 7.0. The image was also adjusted for brightness and contrast to make annotations on the image more apparent.
Process_Date: 2003-2004
Process_Step:
Process_Description:
IMAGE MANIPULATION (2006): The image was changed to a grayscale image using Adobe Photoshop ver 7.0. The image was also adjusted for brightness and contrast to make annotations on the image more apparent.
Process_Date: 2006
Process_Step:
Process_Description:
IMAGE COMPRESSION (2003-2004): This methodology was employed for 19 counties that were scanned. These counties include Brown, Bureau, Calhoun, Cass, Champaign, Coles, Cook, Grundy, Johnson, Knox, LaSalle, McHenry, Monroe, Peoria, St. Clair, Sangamon, Union, Vermilion and Will Counties.

The original scanned files are archived in TIFF format on CD-ROM at the Illinois State Geological Survey.

The files available for download have been compressed using LizardTech's GeoExpress (Solaris platform) MrSID version 1.3.1 software at a compression ratio of 10:1.

Process_Date: 2003-2004
Process_Step:
Process_Description:
IMAGE COMPRESSION (2006): This methodology was employed for 6 counties that were scanned. These counties include Gallatin, Hardin, Pope, Saline, Williamson, and Winnebago Counties.

A copy of the original scanned files are archived in TIFF format on CD-ROM at the Illinois State Geological Survey.

The files available for download have been compressed using LizardTech's GeoExpress (Solaris platform) MrSID Version 5.0.6.1088.Bob_1055_br software at a compression ratio of 6:1.

Process_Date: 2006
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Raster
Raster_Object_Information:
Raster_Object_Type: Pixel
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Local:
Local_Description: These data are not geometrically corrected.
Local_Georeference_Information: Not Applicable
Geodetic_Model:
Horizontal_Datum_Name: none
Ellipsoid_Name: none
Semi-major_Axis: none
Denominator_of_Flattening_Ratio: none
Entity_and_Attribute_Information:
Overview_Description:
Entity_and_Attribute_Overview: none
Entity_and_Attribute_Detail_Citation: Not Applicable
Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Illinois State Geological Survey
Contact_Position: Information Office
Contact_Address:
Address_Type: mailing and physical address
Address: 615 East Peabody Drive
City: Champaign
State_or_Province: Illinois
Postal_Code: 61820
Country: USA
Contact_Voice_Telephone: 217-333-4747
Contact_TDD/TTY_Telephone: 217-785-0211
Contact_Facsimile_Telephone: 217-244-0802
Contact_Electronic_Mail_Address: isgs@isgs.uiuc.edu
Hours_of_Service: 8:00 a.m. - 4:30 p.m., Monday-Friday, U.S. Central Time
Resource_Description:
A TIFF format file is currently available free of charge at the Illinois Natural Resources Geospatial Data Clearinghouse. Refer to the Identification_Information portion of this file for access to downloadable data and metadata.
Distribution_Liability:
The Illinois Department of Natural Resources provides these geographic data "as is." IDNR makes no guarantee or warranty concerning the accuracy of information contained in the geographic data. IDNR further makes no warranties, either expressed or implied as to any other matter whatsoever, including, without limitation, the condition of the product, or its fitness for any particular purpose. The burden for determining fitness for use lies entirely with the user. Although these data have been processed successfully on computers of IDNR, no warranty, expressed or implied, is made by IDNR regarding the use of these data on any other system, nor does the fact of distribution constitute or imply any such warranty.

In no event shall the IDNR have any liability whatsoever for payment of any consequential, incidental, indirect, special, or tort damages of any kind, including, but not limited to, any loss of profits arising out of use of or reliance on the geographic data or arising out of the delivery, installation, operation, or support by IDNR.

Metadata_Reference_Information:
Metadata_Date: 20060811
Metadata_Review_Date: Contact_Information Contact_Organization_Primary
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
Metadata_Access_Constraints: none
Metadata_Use_Constraints: none

Illinois Natural Resources Geospatial Data Clearinghouse

Generated by mp version 2.8.11 on Mon Jan 29 15:19:39 2007