Balloon Excelsior with German meteorologist <a href="https://en.wikipedia.org/wiki/Arthur_Berson" class="extiw" title="en:Arthur Berson">Arthur Berson</a> (1859-1942) and British Balloonist <a href="https://en.wikipedia.org/wiki/Stanley_Spencer_(aeronaut)" class="extiw" title="en:Stanley Spencer (aeronaut)">Stanley Spencer</a> (1868-1906) in <a href="https://en.wikipedia.org/wiki/Crystal_Palace,_London" class="extiw" title="en:Crystal Palace, London">Crystal Palace, London) on September 15th, 1898 before ascending to 8320 M height</a> <a rel="nofollow" class="external autonumber" href="https://query.nytimes.com/mem/archive-free/pdf?res=990DE2DC1438E433A25755C2A96F9C94699ED7CF">[1]</a>.
Unknown author<span style="display: none;">Unknown author</span>
1898-09-15
Richard Aßmann und Arthur Berson (Hrsg.): Wissenschaftliche Luftfahrten, Band 2, Vieweg, Braunschweig 1900