<div class="description">
Ad featuring a cutaway diagram of Apfel's "Electric Insert" water heater, 1917</div>
24 March 1917<div style="display: none;">date QS:P571,+1917-03-24T00:00:00Z/11</div>
This file was contributed to Wikimedia Commons by <a href="https://en.wikipedia.org/wiki/en:Seattle_Public_Library" class="extiw" title="w:en:Seattle Public Library"><span title="public library system serving Seattle, Washington">Seattle Public Library</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 Northwest Digital Heritage.<span style="text-align:left">
<ul><li><a rel="nofollow" class="external text" href="http://cdm16118.contentdm.oclc.org/cdm/ref/collection/p16118coll23/id/5094">Record in source catalog</a></li>
<li>DPLA identifier: <a rel="nofollow" class="external text" href="https://dp.la/item/0b6482ba055548c4e019378ef3a43e5c">0b6482ba055548c4e019378ef3a43e5c</a></li>
<li>Seattle Public Library identifier: spl_tc_915126_1917_12_12</li></ul></span>