King's Balloon.

Daily Gazette de Janesville (Wisconsin), 18 octobre 1881 Clark, J. E.: "mystery balloon, Dakota Territory, 1881", Magonia Exchange, 23 décembre 2007

Fargo, D.T. [Dakota Territory], Oct. 17. – The telegraph operator here reports having seen what he took to be a balloon, probably Professor King’s air-ship, about 8 or 9 o’clock, tonight, hovering over Fargo.