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This is a Non-Federal dataset covered by different Terms of Use than Data.gov.

1939 Lake County Aerial - NE Quarter

Metadata Updated: September 1, 2022

This two foot pixel resolution black and white aerial photography was flown on various dates in July and August 1939. They were scanned in 2001, and georeferenced in 2002. This data should NOT be used at a scale larger than 1 inch = 400 feet. Due to the lack of sufficient camera calibration information, errors will increase towards the margin of each underlying photo, although this effect has been minimized by cropping individual photos to make this mosaic. Since these photos were scanned from paper prints, local distortions (from the media stretching and/or shrinking) may be present as well as pen marks and fading. Caution should be used in interpreting features in this photography with reference to current conditions. In particular, many roads and road intersections have been realigned in the more than 60 years since this photography was taken. This historic aerial photography was captured in digital form as the result of a cooperative project between the Illinois State Geological Survey and the Geographic Information Systems (GIS) and Mapping Division of the Lake County Department of Information Technology. It is part of a statewide program to preserve the oldest known extensive aerial photography for future generations. The original photography was performed by the U.S. Department of Agriculture as part of a nation-wide program for use in agricultural assessment. Since the original negatives became unstable and were destroyed by the National Archives in the 1980s, only paper prints remain. A set of paper prints representing the best available quality was assembled from the collections of several agencies.

Access & Use Information

Public: This dataset is intended for public access and use. Non-Federal: This dataset is covered by different Terms of Use than Data.gov. License: See this page for license information.

Downloads & Resources

Dates

Metadata Created Date September 1, 2022
Metadata Updated Date September 1, 2022

Metadata Source

Harvested from Open data from Lake County, Illinois

Additional Metadata

Resource Type Dataset
Metadata Created Date September 1, 2022
Metadata Updated Date September 1, 2022
Publisher Lake County Illinois GIS
Maintainer
Identifier https://www.arcgis.com/home/item.html?id=bdeb395a3cc3476ba61ea1aa42a231fa
Data First Published 2018-02-01T19:57:35.000Z
Data Last Modified 2022-03-23T20:06:19.000Z
Category geospatial
Public Access Level public
Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
Schema Version https://project-open-data.cio.gov/v1.1/schema
Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
Harvest Object Id 59e3d31a-0faa-41c2-8c1e-74610058dfb7
Harvest Source Id e2c1b013-5957-4c37-9452-7d0aafee3fcc
Harvest Source Title Open data from Lake County, Illinois
Homepage URL https://data-lakecountyil.opendata.arcgis.com/documents/lakecountyil::1939-lake-county-aerial-ne-quarter
License https://www.arcgis.com/sharing/rest/content/items/89679671cfa64832ac2399a0ef52e414/data
Metadata Type geospatial
Old Spatial -88.2150,42.1580,-87.7810,42.4930
Source Datajson Identifier True
Source Hash 37f6967ea769f5c458d9872c9f021aba358862c5
Source Schema Version 1.1
Spatial {"type": "Polygon", "coordinates": -88.2150, 42.1580, -88.2150, 42.4930, -87.7810, 42.4930, -87.7810, 42.1580, -88.2150, 42.1580}

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