File:Walschaerts valve gear.jpg

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Summary

The Walschaerts valve gear on a Pennsylvania Railroad E6s steam locomotive.

This image is taken from the 1922 Locomotive Cyclopedia of American Practice which is now in the public domain. See Copyright.

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This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929.

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Licensing

Public domain	This media file is in the public domain in the United States. This applies to U.S. works where the copyright has expired, often because its first publication occurred prior to January 1, 1929, and if not then due to lack of notice or renewal. See this page for further explanation.	United States
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