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<ul><li><b>Scope and content:</b>  Original Caption: Liberty Motors manufactured for government use.  The Lincoln Motor Co., developed one of the finest heat treating plants in the world.  Shows most modern devices for recording and controlling temperatures.  At Lincoln Motor Co., plant, Detroit, Michigan.</li></ul>
Photographer: Lincoln Motor Co., Detroit, Mich.</div>
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Unknown author<span style="display: none;">Unknown author</span> or not provided</div>
<a href="https://en.wikipedia.org/wiki/U.S._National_Archives_and_Records_Administration" class="extiw" title="en:U.S. National Archives and Records Administration">U.S. National Archives and Records Administration</a>