Trace of an image taken from page 132 of "Histoire de quinze ans. Récit des évènements politiques contemporains", published in 1886. Fished out of the British Library's Flickr stream at flickr.com/photos/britishlibrary/11097747405/
氣球旅行
19th Century、balloon、black and white、engraving、hot-air balloon、line art、travel
19世紀、氣球、黑與白、雕刻、熱氣球、線條藝術、旅行
資料來源：openclipart ( https://openclipart.org/ )