Aircraft <a href="https://en.wikipedia.org/wiki/en:Aero_A.34" class="extiw" title="w:en:Aero A.34">Aero A-34</a> (pilot Josef Novák 1893-1934) in the race "Challenge International de Tourisme", 1929.
Unknown author<span style="display: none;">Unknown author</span>
Letec magazine, volume V, issue 9, page 482, September1929