Le Ballon by Imprimeur E. Pichot. Original from Library of Congress. Digitally enhanced by rawpixel. Free Image from public domain license 
The Tricolor with a French flag themed balloon ascension in Paris, June 6th 1874. Original from Library of Congress.… Free Image from public domain license 
French flag decorated group of air balloons harnessed together, by Leon Benett (1917) or Alphonse-Marie-Adolphe de Neuville… Free Image from public domain license 
The Monster Balloon (Le Géant) from Nadar. Ascension 11 September 1865 by Morriën & Amand (1865). Original from… Free Image from public domain license 
The Tricolor balloon ascension in Paris, June 6th 1874. Original from Library of Congress. Digitally enhanced by rawpixel. Free Image from public domain license 
The Vauxhall balloon from a system of aeronautics (1850) by John Wise (1808-1879) Free Image from public domain license 