4+ hour, 56+ min ago  (1082+ words) Search The Public Domain Review Enjoyed this piece? We need your help to keep publishing. Conrad Kyeser, Bellifortis, Badische Landesbibliothek, Cod. Durlach 11, f. 119r, ca. 1430. " Source Conrad Kyeser, Bellifortis, Bn F, Latin 17873, f. 170r, ca. 1450"60. " Source Joseph Antoine Cochet after Johannes Popels, Children Flying…...