<div class="description">
Exhibition program for "The Chemical Exhibit" installed at the Smithsonian Institute in Washington, D.C. circa 1921. The central feature of the exhibit is a topographical model showing coal tar and other chemical industries in the production of dyes, war gases, pharmaceuticals, and explosives. The program includes an overview of "Chemistry in National Welfare" by H. E. Howe, and discusses sulfur, coal, salt, and air products, as well as coal tar drugs and perfumes.</div>
1921<div style="display: none;">date QS:P571,+1921-00-00T00:00:00Z/9</div>
This file was contributed to Wikimedia Commons by <a href="https://en.wikipedia.org/wiki/en:Science_History_Institute" class="extiw" title="w:en:Science History Institute"><span title="library, museum, and archive in Philadelphia, United States">Science History Institute</span></a> as part of a cooperation project. The donation was facilitated by the <a href="https://en.wikipedia.org/wiki/Digital_Public_Library_of_America" class="extiw" title="w:Digital Public Library of America">Digital Public Library of America</a>, via its partner PA Digital.<span style="text-align:left">
<ul><li><a rel="nofollow" class="external text" href="https://digital.sciencehistory.org/works/8p58pd02r">Record in source catalog</a></li>
<li>DPLA identifier: <a rel="nofollow" class="external text" href="https://dp.la/item/02a0094d1b8c5a792869a63f0026726b">02a0094d1b8c5a792869a63f0026726b</a></li>
<li>Science History Institute identifier: padig:SHI-8p58pd02r</li></ul></span>