Underwood &amp; Underwood Stereographs of Manufacturing Industries, 
<p>Set 7 - Salt-making, 
Image 48 - A reservoir after evaporation – turning up the salt – salt fields Solinen Russia.
</p><p>These stereographs were created and sold as a set for educational use by Underwood &amp; Underwood, a maker of stereoscopic images and equipment. This set was produced between 1895, when the educational unit was established, and 1921, when the company was sold.
</p>
According to a similar publication by the same publisher,<sup id="cite_ref-1" class="reference"><a href="#cite_note-1">[1]</a></sup> these salt fields were located at the coast of the Black Sea in the Odessa area (today in Ukraine).
<div class="fn value">
Unknown<span style="display: none;">Unknown </span></div>
between circa 1895 and circa 1921 <div style="display: none;">date QS:P571,+1500-00-00T00:00:00Z/6,P1319,+1895-00-00T00:00:00Z/9,P1326,+1921-00-00T00:00:00Z/9,P1480,Q5727902</div>
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