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 
Le Ballon by Imprimeur E. Pichot. Original from Library of Congress. Digitally enhanced by rawpixel. Free Image from public domain license 
Openings of the Panama Canals by John. S Pughe (1870-1909), a cartoon commentary that suggests that the age of aviation will… Free Image from public domain license 
Gazetteer of the British Isles, statistical and topographical by John Bartholomew (1887). Original from British Library.… 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