<b>Camillo Walzel</b> (Artist name: <b>Friedrich Zell</b>; 1829-1895), Austrian writer and librettist
signed "R. Heber" (not identified)
<i>Unsere einstigen Mitarbeiter</i>. In: <i>Der Floh</i>, Nr. 53 (31 December 1893), p. 6<br><a rel="nofollow" class="external free" href="http://anno.onb.ac.at/cgi-content/anno?aid=flo&amp;datum=18931231&amp;seite=6">http://anno.onb.ac.at/cgi-content/anno?aid=flo&amp;datum=18931231&amp;seite=6</a>