British kite balloon | NZHistory, New Zealand history online
Why balloons were some of the scariest targets of World War I - We Are The Mighty
WWI Observation Balloon by Alan Frowen (Scratchbuilt 1/72)
Nicolai Eberholst (Pike Grey 1914-1918) on Twitter: "Austro-Hungarian hot-air observation balloon on the Italian Front, 1916. Spherical balloons like this were generally considered obsolescent at this time compared to the newer aerodynamic
1918: Ohio State And The WWI Army Balloon Corps | WOSU Public Media
File:World War I Observation Balloon HD-SN-99-02269.JPEG - Wikimedia Commons
A German observation balloon takes off to direct artillery fire at the Somme, 1916 : r/wwi
Balloon Busters. The daredevils of World War One? — History is Now Magazine, Podcasts, Blog and Books | Modern International and American history
A German Observation Balloon Ready to Ascend during the First World War
Balloons and Dirigibles in WWI | National WWI Museum and Memorial
Balloons and Dirigibles in WWI | National WWI Museum and Memorial