Signature of <a href="https://en.wikipedia.org/wiki/Ferdinand_von_Zeppelin" class="extiw" title="w:Ferdinand von Zeppelin">Ferdinand von Zeppelin</a>
<a href="https://en.wikipedia.org/wiki/Ferdinand_von_Zeppelin" class="extiw" title="w:Ferdinand von Zeppelin">Ferdinand von Zeppelin</a>
1916-10-21
Photograph of a letter to <a href="https://en.wikipedia.org/wiki/Claudius_Dornier" class="extiw" title="w:Claudius Dornier">Claudius Dornier</a> exposed in the Dornier Museum, Friedrichshafen, Germany