Curt Teich, ca. 1895. Curt Teich Postcard Archives,  Lake County Discovery Museum, Wauconda, Illinois.
Unknown author<span style="display: none;">Unknown author</span>
<a rel="nofollow" class="external free" href="https://www.immigrantentrepreneurship.org/image.php?rec=1825&amp;entry=245">https://www.immigrantentrepreneurship.org/image.php?rec=1825&amp;entry=245</a>