Jack Kammerer and Edna Howland advertise a new vaudeville act in The New York Clipper. September 5, 1917
The New York Clipper
1917-09-05
<a rel="nofollow" class="external free" href="https://archive.org/stream/Clipper65-1917-09#page/n29">https://archive.org/stream/Clipper65-1917-09#page/n29</a>