Big Ten Academic Alliance Geospatial Discovery Portal

Big Ten Academic Alliance Geoportal

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1.
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Aerial Imagery (Doq) Grid: Michigan, 1992-1998

1992-1998. State of Michigan. Digital Ortho-Quadrangle grid for 1992 1998 aerial imagery acquisitions.

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Aerial Imagery Index Grid, 12-foot Resolution: Prince George's County, Maryland, 1998

1998. The Maryland-National Capital Park & Planning Commission.

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Aerial Imagery Index Grid, 1-foot Resolution: Prince George's County, Maryland, 1998

1998. The Maryland-National Capital Park & Planning Commission.

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Aerial Imagery Index Grid, 3-foot Resolution: Prince George's County, Maryland, 1998

1998. The Maryland-National Capital Park & Planning Commission.

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Aerial Imagery Index Points: Prince George's County, Maryland, 1965

1965. The Maryland-National Capital Park & Planning Commission. The Commission has purchased a set of black & white imagery paper prints for all of Prince George's County, Maryland. This GIS point layer is used ...

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Aerial Imagery Index Points: Prince George's County, Maryland, 1968

1968. The Maryland-National Capital Park & Planning Commission. The Commission has purchased a set of black & white imagery paper prints for all of Prince George's County, Maryland. This GIS point layer is used ...

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Aerial Imagery Index Points: Prince George's County, Maryland, 1972

1972. The Maryland-National Capital Park & Planning Commission. The Commission has purchased a set of black & white imagery paper prints for all of Prince George's County, Maryland. This GIS point layer is used ...

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Aerial Imagery Index Points: Prince George's County, Maryland, 2014

2014. The Maryland-National Capital Park & Planning Commission. The Commission purchased imagery for Spring 2014 from Kucera International, Inc. for all of Prince George's County, Maryland. This GIS point layer...

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Aerial Photo Centers, Maryland Imagery Acquisition Flight Information: Maryland

2018. ArcGIS Online for Maryland. This is a MD iMAP hosted service. Find more information on http://imap.maryland.gov.This service contains photo centers for the 2016 2017 high-reso...

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Aerial Photo Grid: Dublin, Ohio

2015. Ohio Geographically Referenced Information Program. Political and Administrative Boundaries around Dublin, Ohio. This includes the layers: Tax Increment Finance Zones, Annexation History, Subdivision...

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Aerial Photo Grid: Dublin, Ohio, 2009

2009. Ohio Geographically Referenced Information Program. Political and Administrative Boundaries around Dublin, Ohio. This includes the layers: Tax Increment Finance Zones, Annexation History, Subdivision...

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Aerial Photo Tile Grid, 3 Inch, Maryland Imagery Acquisition Flight Information: Baltimore, Annapolis, Gaithersburg, Maryland

2016. ArcGIS Online for Maryland. This is a MD iMAP hosted service layer. Find more information at http://imap.maryland.gov.This data contains the tile layout for imagery acquistion...

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Aerial Photo Tile Grid, 6 Inch, Maryland Imagery Acquisition Flight Information: Maryland

2016. ArcGIS Online for Maryland. This is a MD iMAP hosted service layer. Find more information at http://imap.maryland.gov.This data contains the tile layout for imagery acquistion...

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Aerial Photography Dates File: Iowa, 1930s

Aerial Photography Dates File: Iowa, 1930s

1930. Iowa Department of Natural Resources. This file contains a shapefile of the centroids of individual scanned photos, and the associated date.

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Aerial Photography Dates: Iowa, 1950s

1950. Iowa Department of Natural Resources. Zipped file Contains a dateset of the centroids, with dates, of the individual images used.

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Aerial Photography Dates: Iowa, 1960s

1960. Iowa Department of Natural Resources. This dataset is centroids with dates of the individual images used.

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Aerial Photography Dates: Iowa, 1970s

1970. Iowa Department of Natural Resources. This shapefile has centroids with dates of all images used in this dataset.

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Aerial Photography: Franklin County, Ohio, 2007

2007. Franklin County, Ohio. 2007 Ortho Aerial Photography of Franklin County and Surrounding Areas.

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Aerial Photography: Franklin County, Ohio, 2009

2009. Franklin County, Ohio. 2009 Ortho Aerial Photography of Franklin County and Surrounding Areas.

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Aerial Photography: Franklin County, Ohio, 2011

2011. Franklin County, Ohio. 2011 Ortho Aerial Photography of Franklin County and Surrounding Areas.