<i>Title:</i> Color expert for Uncle Sam. Washington, D.C., June 20. When it was discovered that color plays an important [role] in marketing of cotton, Miss Dorothy Nickerson, Color Technologist of the U.S. Department of Agriculture, developed a method for measuring the color of raw cotton mechanically. The equipment comprises a comparator, a motor on which to spin standard color discs, the color discs, and standard artificial daylight. When looking through the comparator, the operator sees a circular field, the upper half made up of the color of the cotton and the lower half made up of the disc colors, 6/20/38
<i>Abstract/medium:</i> 1 negative : glass ; 4 x 5 in. or smaller
Harris &amp; Ewing Collection
<p>Library of Congress
</p>
<ul><li><i>Catalog:</i> <a rel="nofollow" class="external free" href="https://lccn.loc.gov/2016873729">https://lccn.loc.gov/2016873729</a></li>
<li><i>Image download:</i> <a rel="nofollow" class="external free" href="https://cdn.loc.gov/service/pnp/hec/24700/24758v.jpg">https://cdn.loc.gov/service/pnp/hec/24700/24758v.jpg</a></li>
<li><i>Original url:</i> <a rel="nofollow" class="external free" href="https://www.loc.gov/pictures/item/2016873729/">https://www.loc.gov/pictures/item/2016873729/</a></li></ul>