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You searched for: Subject Imagery and Base Maps Remove constraint Subject: Imagery and Base Maps
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116.
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Aerial Photography Dates: Iowa, 1950s iowa

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

117.
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Aerial Photography Dates: Iowa, 1960s iowa

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

118.
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Aerial Photography Dates: Iowa, 1970s iowa

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