<a rel="nofollow" class="external text" href="http://www.lrl.usace.army.mil/Missions/Civil-Works/Navigation/Locks-and-Dams/McAlpine-Locks-and-Dam/">McAlpine Locks</a> observation area near resident engineer office building.
<p>Positioning <a href="https://en.wikipedia.org/wiki/propeller" class="extiw" title="w:propeller">propeller</a> to be displayed at interpretive area.
.
<a href="https://en.wikipedia.org/wiki/Ohio_River" class="extiw" title="w:Ohio River">Ohio River</a> mile 607.
<a href="https://en.wikipedia.org/wiki/Louisville,_Kentucky" class="extiw" title="w:Louisville, Kentucky">Louisville, Kentucky</a>.
July 16, 2002.
file # A2G002.
.
</p>
Canon PowerShot A40 (2-megapixel digital camera).
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/70020260@N04">William Alden</a> from Louisville, Kentucky, USA
CC BY-SA 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/bill_alden/26990123248/">a2g002a: Positioning propeller at McAlpine Locks interpretive area</a>