One of the Triplanes from the film belongs to Robs Lamplough in England (also owns the blue-nose combat vet P-51 "Miss Helen").
The Caudron Luciole observation aircraft is with Ken Kellett, who works for Kermit in Florida, and one of the other Fokker D.VIIs is in the Stampe Museum in Antwerp, Belgium
http://www.stampe.be/index_uk.htm .
The third D.VII is in the Southern Museum of Flight in Birmingham, Alabama.
Most of them were in Denton, TX in the '80s, then went to Frank Ryder in Alabama, then were sold off and dispersed after Frank's death. The silver Pfalz and the D.VII now in NZ belonged for a long time to Javier Arango in California. I got to fly them while Javier owned them, the D.VII was a nice flying machine, the Pfalz not so much.