History: The first four-engined bomber Sikorsky Ilya Muromets during ww1 [1329 x 800]

http://i.imgur.com/ZDm5oJA.jpeg via /r/HistoryPorn https://www.reddit.com/r/HistoryPorn/comments/58r5un/the_first_fourengined_bomber_sikorsky_ilya/?utm_source=ifttt