Violinists Alexander Petschnikoff (1873-1949) and Lili Petschnikoff (?-1957)
Unknown author<span style="display: none;">Unknown author</span>
<a rel="nofollow" class="external text" href="https://carlacushman.blogspot.de/2010/08/inside-burr-mcintosh-monthly-march-1907.html">Burr McIntosh-Monthly, Vol. 12 • No. 47 • March 1907</a>