File:99c041 supplement 1932 chart of Lock 41 and vicinity (6757383883).jpg

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Detail of Ohio River chart 168 showing lower end of Portland Canal, Lock 41 (renamed for senior engineer William McAlpine in 1960) and parts of Shippingport and Sand Islands. The 360-foot auxiliary lock (rebuilt in 1930 from the lower chamber of the 1872 Scowden locks) can be seen next to the 600-foot main lock (opened in 1921). . Ohio River mile 607. Louisville, Kentucky.

chart revised in 1932.
Date
Source 99c041 supplement: 1932 chart of Lock 41 and vicinity
Author William Alden from Louisville, Kentucky, USA
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Public domain
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.

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Camera location38° 16′ 39.93″ N, 85° 47′ 28.19″ W Kartographer map based on OpenStreetMap.View this and other nearby images on: OpenStreetMapinfo

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This file is licensed under the Creative Commons Attribution-Share Alike 2.0 Generic license.
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This image was originally posted to Flickr by Bill Alden at https://flickr.com/photos/70020260@N04/6757383883. It was reviewed on 14 April 2021 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-sa-2.0.

14 April 2021

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current04:49, 14 April 2021Thumbnail for version as of 04:49, 14 April 20211,615 × 906 (524 KB)Geo Swan (talk | contribs)Transferred from Flickr via #flickr2commons

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