Image: Mississippi River Lock and Dam number 9
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Description: Mississippi River Lock and Dam number 9 near Harpers Ferry, Iowa
Title: Mississippi River Lock and Dam number 9
Credit: [1] from [2]
Author: USGS
Permission: This image is in the public domain in the United States because it only contains materials that originally came from the United States Geological Survey, an agency of the United States Department of the Interior. For more information, see the official USGS copyright policy.
Usage Terms: Public domain
License: Public domain
Attribution Required?: No
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