<a href="https://en.wikipedia.org/wiki/American_Red_Cross" class="extiw" title="en:American Red Cross">American Red Cross</a> 50th Anniversary 1881-1931 - 2-cent 1931 issue U.S. stamp. The design features a Red Cross nurse with a globe and cross, inspired by a poster called 'The Greatest Mother in the World'.
Bureau of Engraving and Printing
U.S. Postal Service; National Postal Museum: <a rel="nofollow" class="external text" href="http://arago.si.edu/category_2032991.html">Red Cross Issue</a>