US NAVY / SCIENCE PHOTO LIBRARY US NAVY / SCIENCE PHOTO LIBRARY
Experimental F6L flying boat under construction. Hull of an experimental F6L flying boat under construction at the Naval Aircraft Factory, Philadelphia, Pennsylvania, USA, on 19th October 1918. Also seen here is an influenza (flu) precaution sign (upper left). The Spanish Influenza epidemic was extremely active in Philadelphia at this time.
Model release not required. Property release not required.