Mosaic of Historical Aerial Photography of Greater Chicago and St. Louis Areas, 1936-1941

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Frequently-anticipated questions:


What does this data set describe?

Title:
Mosaic of Historical Aerial Photography of Greater Chicago and St. Louis Areas, 1936-1941
Abstract:
This data set is an SDE raster mosaic of historical black and white aerial photographs that occur in the greater Chicago and St. Louis metropolitan areas of Illinois, acquired during 1936 to 1941. Coverage is limited to areas that fall within UTM zone 16. The original paper prints have been scanned at a resolution of 750 DPI on a Crosfield 646 IE drum scanner and stored as TIFF format images. The data are stored in the "orthorectified" spatial reference of UTM Zone 16, NAD83 with a 1-meter ground resolution. The original photographic paper prints are at a scale 1:20,000. The images were then orthorectified and cropped using Leica Photogametry Suite Version 8.7. Settings used include; frame camera with fiducials, 4191 meter flight height, 209.55 focal length, Horizontal reference (UTM zone 16 NAD 1983) in meters, and vertical reference in feet. Illinois NAPP III DOQs (1998/99) and Illinois DEM data (Luman, et al, 2004, UTM zone 16 NAD 1983) were used for the horizontal and vertical references for the orthorectification process.

The companion raster dataset GISDB.IL_HISTORICAL_AERIAL_UTM15_RAS contains additional coverage of the St. Louis metropolitan area within Illinois and UTM zone 15.

Supplemental_Information:
Background of original photography:

On May 12, 1933, President Franklin Roosevelt signed into law the Agricultural Adjustment Act, which was originally administered by the USDA-AAA. Since the mid-1930s, the USDA-AAA, now the USDA Farm Services Agency (USDA-FSA), periodically acquired nationwide aerial photographs by county. These aerial photographs were originally used by the USDA-AAA to assess the nation's agricultural lands and served as the basis for the national soil surveys.

Statewide coverage of USDA-AAA aerial photographs was first achieved for Illinois from 1936 through 1941. Approximately 27,000 individual frames were acquired for complete coverage of the state.

Because of deterioration and stability issues, the original 7-inch by 9-inch and 9-inch by 9-inch nitrocellulose (silver nitrate) negatives were destroyed at the National Archives in the 1980s. The United States Navy and the National Archives made small-format copies of the negatives prior to the destruction of the original negatives. These copies, and the photographic prints made from them, are of extremely poor quality. Therefore, photographic paper prints made from the original large-format negatives are the best remaining representation of this aerial photography collection.

Nearly complete photographic paper print collections for Illinois exist at the Illinois Department of Natural Resources Office of Water Resources (IDNR OWR) and the University of Illinois at Urbana Champaign (UIUC) Map and Geography Library. Smaller regional print collections are also located at many Illinois libraries and governmental agencies. None of the collections are complete, however, and only limited preservation efforts are in place to ensure the permanence of these print collections.

  1. How should this data set be cited?

    Illinois State Geological Survey, 20060401, Mosaic of Historical Aerial Photography of Greater Chicago and St. Louis Areas, 1936-1941: ISGS GIS Database GISDB.IL_HISTORICAL_AERIAL_UTM16_RAS, Illinois State Geological Survey, Champaign, Illinois.

    Online Links:

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: -90.210695
    East_Bounding_Coordinate: -87.464811
    North_Bounding_Coordinate: 42.517129
    South_Bounding_Coordinate: 38.149452

  3. What does it look like?

  4. Does the data set describe conditions during a particular time period?

    Beginning_Date: 1936
    Ending_Date: 1941
    Currentness_Reference:
    The origional black and white aerial photographs were taken from 1936 to 1941. Orthorectification occurred from 2005 to 2007.

  5. What is the general form of this data set?

    Geospatial_Data_Presentation_Form: remote-sensing image

  6. How does the data set represent geographic features?

    1. How are geographic features stored in the data set?

      This is a Raster data set. It contains the following raster data types:

      • Dimensions 683175 x 317293 x 1, type Pixel

    2. What coordinate system is used to represent geographic features?

      Grid_Coordinate_System_Name: Universal Transverse Mercator
      Universal_Transverse_Mercator:
      UTM_Zone_Number: 16
      Transverse_Mercator:
      Scale_Factor_at_Central_Meridian: 0.999600
      Longitude_of_Central_Meridian: -87.000000
      Latitude_of_Projection_Origin: 0.000000
      False_Easting: 500000.000000
      False_Northing: 0.000000

      Planar coordinates are encoded using coordinate pair
      Abscissae (x-coordinates) are specified to the nearest 0.703546
      Ordinates (y-coordinates) are specified to the nearest 0.703523
      Planar coordinates are specified in meters

      The horizontal datum used is North American Datum of 1983.
      The ellipsoid used is Geodetic Reference System 80.
      The semi-major axis of the ellipsoid used is 6378137.000000.
      The flattening of the ellipsoid used is 1/298.257222.

      Vertical_Coordinate_System_Definition:
      Altitude_System_Definition:

  7. How does the data set describe geographic features?


Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)

  2. Who also contributed to the data set?

     Funding source:   Illinois Department of Transportation (IDOT)
     Funding source:   Illinois Department of Natural Resources (IDNR)
     Funding source:   IDNR Office of Water Resources (IDNR OWR)
     Funding source:   United States Army Corps of Engineers (USACE)
     Funding source:   Illinois State Geological Survey (ISGS)
    

  3. To whom should users address questions about the data?

    Contact_Instructions: Please refer to the Distribution Information section.


Why was the data set created?

United States Department of Agriculture, Agricultural Adjustment Administration (USDA-AAA) aerial photographs are widely recognized as a unique and detailed record of the cultural and physical landscapes of Illinois. USDA-AAA photography is intensively used for diverse purposes by government agencies, surveyors, planners, consulting scientists, engineers and other individuals. These purposes include determination of past land uses, restoration of natural areas, assessing historical changes in stream dynamics, and a variety of other applications.


How was the data set created?

  1. From what previous works were the data drawn?

    (source 1 of 1)
    Illinois State Geological Survey, Unpublished Material, Illinois Historical Aerial Photographs: 1936-1941: Illinois State Geological Survey, Champaign, Illinois.

    Online Links:

    Type_of_Source_Media: paper
    Source_Scale_Denominator: 20000
    Source_Contribution:
    Unregistered, unrectified digital scans of original photography.

  2. How were the data generated, processed, and modified?

    Date: November 2005 - March 2006 (process 1 of 1)
    The original paper prints have been scanned at a resolution of 750 DPI on a Crosfield 646 IE drum scanner and stored as TIFF format images. The data are stored in the "orthorectified" spatial reference of UTM Zone 16, NAD83 with a 1-meter ground resolution. The original photographic paper prints are at a scale 1:20,000. The images were then orthorectified and cropped using Leica Photogametry Suite Version 8.7. Settings used include; frame camera with fiducials, 4191 meter flight height, 209.55 focal length, Horizontal reference (UTM zone 16 NAD 1983) in meters, and vertical reference in feet. The 1998/99 Illinois DOQs and the Illinois DEM (UTM zone 16 NAD 198) were used for the horizontal and vertical references for the orthorectification process. For more detailed information concerning the orthorectification process, see contact.

    Person who carried out this activity:

  3. What similar or related data should the user be aware of?

    Illinois State Geological Survey, 200306, Mosaic of Illinois NAPP3 Digital Orthophoto Quadrangles in UTM Zone 15, NAD83: ISGS GIS Database IL_DOQ_NAPP3_MOSAIC_UTM15_RAS, Illinois State Geological Survey, Champaign, IL.

    Other_Citation_Details:
    In addition to being used to assist in spatial registration, the metadata of this dataset provides the general methodology used to create the SDE mosaic of historical photos.
    Donald Luman, Lisa Smith, Chris Goldsmith, 2003, Illinois Statewide 30-Meter Digital Elevation Model: ISGS GIS Database IL_DEM_30M_RAS, Illinois State Geological Survey, Champaign, IL.

    , ISGS Terms of Use.

    Online Links:

    , University of Illinois Web Privacy Notice.

    Online Links:

    , University Copyright Policy (stated in the General Rules Concerning University Organization and Procedure, Article III, Section 4).

    Online Links:

    , Policy on Appropriate Use of Computers and Network Systems at the University of Illinois at Urbana-Champaign.

    Online Links:


How reliable are the data; what problems remain in the data set?

  1. How well have the observations been checked?

  2. How accurate are the geographic locations?

    DOQs (1998/99) used for orthorectification met USGS locational accuracy standards. Additional information on this testing procedure can be found in U.S. Department of the Interior, U.S. Geological Survey, 1993, Technical Instructions, ORACC Users Manual (draft): Reston, VA. Field investigations to validate DOQ positional accuracy reliability are periodically conducted by the USGS, National Mapping Division, Geometronics Standards Section. DOQ's produced by cooperators and contractors use similarly approved RMSE test procedures.

    The orthorectification process for the historical photos had RMSEs less than 7 meters.

  3. How accurate are the heights or depths?

    These historical aerial photographs were orthorectified using the Illinois DEM for vertical reference and should reflect the vertical positional accuracy of said DEM (stated as half the contour interval of the original USGS topogrphic survey. A typical interval for Illinois is ten feet although other ranges may exist.)

  4. Where are the gaps in the data? What is missing?

    Includes full coverage of Clinton, Cook, DuPage, Kane, Kendall, Lake, McHenry, Washington, and Will counties. Includes partial coverage of Madison and St. Clair counties.

  5. How consistent are the relationships among the observations, including topology?

    No report.


How can someone get a copy of the data set?

Are there legal restrictions on access or use of the data?

Access_Constraints:
ISGS information must be obtained directly from the ISGS or from an authorized distributor. Be aware that ISGS information obtained from an unauthorized third party may have been altered subsequent to original distribution, or may no longer be current.

Any access to these data, Web sites, computer systems, electronic services, and electronic networks is governed by University and campus policies, in particular, but not limited to, the Policy on Appropriate Use of Computers and Network Systems at the University of Illinois at Urbana-Champaign, the ISGS Terms of Use document available at the ISGS Web site, and the University of Illinois Web Privacy Notice.

Links to these are provided in the Cross References section.

Use_Constraints:
ISGS information is the property of and copyrighted by the Board of Trustees of the University of Illinois with all rights reserved.  University copyright policy is stated in the General Rules Concerning University Organization and Procedure, Article III, Section 4. A link is provided in the Cross References section.

Individuals or entities may make fair use of copyrighted ISGS material, such as reproducing a single figure or table, or using a brief text quotation, without obtaining formal permission, but in all cases the Illinois State Geological Survey must be credited as the source of the material. To reproduce ISGS information beyond the fair use standard, permission must be obtained from the ISGS Information Office, 615 East Peabody Drive, Champaign, Illinois 61820, 217-333-4747, isgs@isgs.illinois.edu. License fees and a license agreement may be required, depending on the proposed usage.

Any use of these data is governed by University and campus policies, in particular, but not limited to, the Policy on Appropriate Use of Computers and Network Systems at the University of Illinois at Urbana-Champaign, the ISGS Terms of Use document available at the ISGS Web site, and the University of Illinois Web Privacy Notice. Links to these are provided in the Cross References section.

Map information is to be used at a scientifically and cartographically appropriate scale, that is, at a scale no greater than indicated on the map or as described in the documentation of the map or map data.  Map information is not appropriate for, and is not to be used as, a geodetic, legal, or engineering base. Map information has no legal basis in the definition of boundaries or property lines and is not intended as a substitute for surveyed locations such as can be determined by a registered Public Land Surveyor.

The data do not replace the need for detailed site-specific studies.

  1. Who distributes the data set? (Distributor 1 of 1)

    Information Office, Illinois State Geological Survey (ISGS), a division of the Institute of Natural Resource Sustainability (INRS) of the University of Illinois
    615 East Peabody Drive
    Champaign, Illinois 61820
    USA

    217-333-4747 (voice)
    isgs@isgs.illinois.edu

    Hours_of_Service: 8:00 a.m. - 4:30 p.m., Monday-Friday, U.S. Central Time
  2. What's the catalog number I need to order this data set?

  3. What legal disclaimers am I supposed to read?

    Refer to the Legal Notices of Terms and Conditions of the University of Illinois Web Privacy Policy (there is a link in the Cross References section) for policy statements regarding the following:

    Disclaimer of Liability Disclaimer of Warranties and Accuracy of Data Disclaimer of Endorsement Disclaimer for External Links Disclaimer of Duty to Continue Provision of Data Security Choice of Law

    By obtaining these data you agree to the provisions of the University of Illinois Web Privacy Policy, regardless of the manner in which the information was obtained.

  4. How can I download or order the data?

  5. What hardware or software do I need in order to use the data set?

    The data are intended for use with GIS software. The ISGS uses ESRI ArcGIS software, however, ESRI formats can be imported into many different GIS software packages. It is expected that customers who obtain these data have the technical expertise to use GIS software. The ISGS does not provide software support of any kind.


Who wrote the metadata?

Dates:
Last modified: 24-Feb-2009
Metadata author:

Contact_Instructions: Please refer to the Distribution Information section.
Metadata standard:
FGDC Content Standards for Digital Geospatial Metadata (FGDC-STD-001-1998)
Metadata extensions used:


Illinois Natural Resources Geospatial Data Clearinghouse

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