WPA Poster for a radio presentation "Moments with genius" by the Barnum Radio Players on radio station <a href="https://en.wikipedia.org/wiki/WBBM_(AM)" class="extiw" title="en:WBBM (AM)">WBBM</a>, showing the stylized face of a man holding a test tube.
WPA Federal Art Project
Work Projects Administration Poster Collection (Library of Congress). <a rel="nofollow" class="external free" href="http://memory.loc.gov/service/pnp/cph/3f00000/3f05000/3f05200/3f05239r.jpg">http://memory.loc.gov/service/pnp/cph/3f00000/3f05000/3f05200/3f05239r.jpg</a>