Filmed circa 1942 in beautiful Kodachrome color at the EDO plant in College Point, NY and at Laguardia Airport. EDO manufactured attachable floats that converted conventional aircraft into seaplanes. I determined the approximate date of filming from a viewer's comment that the particular type of star insignia seen on the C-47 was only used in 1942 (thanks, ocoee96).
My grandfather worked at EDO as a traffic manager during World War Two, during which time he probably acquired this film. I discovered it just a few years ago while archiving his collection. Grandpa was an experienced cameraman, having made many technically excellent amateur films from 1929 onward, but I can't say for sure if he had any hand in this film's production since the credits are missing.
This video replaces an earlier posting that was of inferior quality. I added the soundtrack using music from a symphony composed in 1942 by Roy Harris.