From a 1914 publication.
Photographer not named.
<cite style="font-style:normal"> (<span class="mw-formatted-date" title="1914-12-16">16 December 1914</span>). "<a rel="nofollow" class="external text" href="https://www.newspapers.com/image/181524566/?terms=Beatrice%20Gjertsen&amp;match=1">Beatrice Gjertsen Will Wed; Remains on Operatic Stage</a>". <i>Star Tribune</i>: 1.</cite>